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Mainspring Insecticide 

GROUP 4A 28 INSECTICIDE

For foliar and systemic control of listed insect pests in ornamental plants, fruit and nut trees 

(non-bearing), forest seedlings (liner production and field application) and listed vegetables 

grown for transplant. 

Active Ingredient: 

Thiamethoxam1

 ......................................................................................................... 20.0% 

Cyantraniliprole2

 ........................................................................................................ 20.0% 

Other Ingredients: 60.0% 

Total: 100.0% 

1

CAS No. 153719-23-4 

2

CAS No. 736994-63-1 

Mainspring Insecticide is a water-dispersible granule that contains 3.2 ounces of active 

ingredient of thiamethoxam and 3.2 ounces of cyantraniliprole per pound of formulated product 

KEEP OUT OF REACH OF CHILDREN. 

CAUTION 

See additional precautionary statements and directions for use in booklet[on bag]. 

EPA Reg. 100-RUEE 

EPA Est. XXXXX 

SCP RUEE A-M(draft-b Mainspring Insecticide) 

__________ 

Net Weight 

 
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FIRST AID 

If in eyes • Hold eye open and rinse slowly and gently with water for 15-20 

minutes. 

• Remove contact lenses, if present, after the first 5 minutes, then 

continue rinsing eye. 

• Call a poison control center or doctor for treatment advice 

If inhaled • Move person to fresh air. 

• If person is not breathing, call 911 or an ambulance, then give 

artificial respiration, preferably by mouth-to-mouth, if possible. 

• Call a poison control center or doctor for further treatment advice. 

If swallowed • Call a poison control center or doctor immediately for treatment 

advice. 

• Have person sip a glass of water if able to swallow. 

• Do not induce vomiting unless told to do so by the poison control 

center or doctor. 

• Do not give anything by mouth to an unconscious person.

If on skin or 

clothing 

• Take off contaminated clothing. 

• Rinse skin immediately with plenty of water for 15-20 minutes. 

• Call a poison control center or doctor for treatment advice. 

Have the product container or label with you when calling a poison control center or doctor, or 

going for treatment. 

HOT LINE NUMBER 

For 24-Hour Medical Emergency Assistance (Human or Animal) 

or Chemical Emergency Assistance (Spill, Leak, Fire or Accident) 

Call 

1-800-888-8372 

PRECAUTIONARY STATEMENTS 

Hazards to Humans and Domestic Animals 

CAUTION 

Causes moderate eye irritation. Harmfull if swallowed, absorbed through the skin or inhaled. 

Avoid contact with eyes, skin or clothing. Avoid breathing dust. Wash thoroughly with soap and 

water after handling, and before drinking, eating, chewing gum, using tobacco, or using the 

toilet. Remove and wash contaminated clothing before reuse. 

Personal Protective Equipment (PPE) 

Applicators and other handlers must wear: 

• Long-sleeved shirt and long pants 

• Shoes plus socks 

• Chemical-resistant gloves made of any waterproof material – Category A (e.g., natural 

rubber ≥14 mils) 

Follow manufacturer’s instructions for cleaning/maintaining PPE. If no such instructions exist for 

washables, use detergent and hot water. Keep and wash PPE separately from other laundry. 
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Engineering Control Statements 

When handlers use closed systems, enclosed cabs, or aircraft in a manner that meets the 

requirements listed in the Worker Protection Standard (WPS) for agricultural pesticides [40 CFR 

170.240(d)(4-6)], the handler PPE requirements may be reduced or modified as specified in the 

WPS. 

User Safety Recommendations 

Users should:

• Wash hands before eating, drinking, chewing gum, using tobacco, or using the 

toilet. 

• Remove clothing/PPE immediately if pesticide gets inside. Then wash 

thoroughly and put on clean clothing. 

Environmental Hazards 

This pesticide is toxic to wildlife and highly toxic to aquatic invertebrates, oysters and shrimp. 

Do not apply directly to water, or to areas where surface water is present, or to intertidal areas 

below the mean high water mark. Drift or runoff from treated areas may be hazardous to 

aquatic organisms in neighboring areas. Do not contaminate water when cleaning equipment or 

disposing of equipment wash waters. 

This product is highly toxic to bees exposed to direct treatment on blooming crops or weeds and 

may cause possible effects to pollinators from exposure to translocated residues in blooming 

crops. Do not apply this product or allow it to drift to blooming crops or weeds while bees are 

foraging in/or adjacent to the treatment area. 

• Surface Water Advisory 

This product may impact surface water quality due to spray drift and runoff of rain water. 

This is especially true for poorly draining soils and soils with shallow ground water. This 

product is classified as having high potential for reaching surface water via runoff for 

several months after application. A level, well-maintained vegetative buffer strip 

between areas to which this product is applied and surface water features such as 

ponds, streams, and springs will reduce the potential loading of thiamethoxam water 

from runoff water and sediment. Runoff of this product will be reduced by avoiding 

applications when rainfall is forecast to occur within 48 hours. (See manual at the 

following internet address: 

http://www.wsi.nrcs.usda.gov/products/W2Q/pest/core4.html). 

• Ground Water Advisory 

This product has properties and characteristics associated with chemicals detected in 

ground water. This chemical may leach into the ground water if used in areas where 

soils are permeable, particularly where the water table is shallow. 

• Spray Drift Advisory 

Do not allow this product to drift. 

 
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CONDITIONS OF SALE AND LIMITATION OF WARRANTY AND LIABILITY 

NOTICE: Read the entire Directions for Use and Conditions of Sale and Limitation of Warranty 

and Liability before buying or using this product. If the terms are not acceptable, return the 

product at once, unopened, and the purchase price will be refunded. 

The Directions for Use of this product must be followed carefully. It is impossible to eliminate all 

risks inherently associated with the use of this product. Crop injury, ineffectiveness or other 

unintended consequences may result because of such factors as manner of use or application, 

weather or crop conditions, presence of other materials or other influencing factors in the use of 

the product, which are beyond the control of SYNGENTA CROP PROTECTION, LLC or Seller. 

To the extent permitted by applicable law, Buyer and User agree to hold SYNGENTA and Seller 

harmless for any claims relating to such factors. 

SYNGENTA warrants that this product conforms to the chemical description on the label and is 

reasonably fit for the purposes stated in the Directions for Use, subject to the inherent risks 

referred to above, when used in accordance with directions under normal use conditions. To 

the extent permitted by applicable law: (1) this warranty does not extend to the use of the 

product contrary to label instructions or under conditions not reasonably foreseeable to or 

beyond the control of Seller or SYNGENTA, and, (2) Buyer and User assume the risk of any 

such use. TO THE EXTENT PERMITTED BY APPLICABLE LAW, SYNGENTA MAKES NO 

WARRANTIES OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE 

NOR ANY OTHER EXPRESS OR IMPLIED WARRANTY EXCEPT AS WARRANTED BY THIS 

LABEL. 

To the extent permitted by applicable law, in no event shall SYNGENTA be liable for any 

incidental, consequential or special damages resulting from the use or handling of this product. 

TO THE EXTENT PERMITTED BY APPLICABLE LAW, THE EXCLUSIVE REMEDY OF THE 

USER OR BUYER, AND THE EXCLUSIVE LIABILITY OF SYNGENTA AND SELLER FOR 

ANY AND ALL CLAIMS, LOSSES, INJURIES OR DAMAGES (INCLUDING CLAIMS BASED 

ON BREACH OF WARRANTY, CONTRACT, NEGLIGENCE, TORT, STRICT LIABILITY OR 

OTHERWISE) RESULTING FROM THE USE OR HANDLING OF THIS PRODUCT, SHALL 

BE THE RETURN OF THE PURCHASE PRICE OF THE PRODUCT OR, AT THE ELECTION 

OF SYNGENTA OR SELLER, THE REPLACEMENT OF THE PRODUCT. 

SYNGENTA and Seller offer this product, and Buyer and User accept it, subject to the foregoing 

Conditions of Sale and Limitation of Warranty and Liability, which may not be modified except 

by written agreement signed by a duly authorized representative of SYNGENTA. 

 
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DIRECTIONS FOR USE 

It is a violation of Federal law to use this product in a manner inconsistent with its labeling. Read 

entire label before using this product. 

Do not apply this product in a way that will contact workers or other persons, either directly or 

through drift. Only protected handlers may be in the area during application. For any 

requirements specific to your State or Tribe, consult the agency responsible for pesticide 

regulation. 

This labeling must be in the possession of the user at the time of application. 

AGRICULTURAL USE REQUIREMENTS 

Use this product only in accordance with its labeling and with the Worker Protection Standard, 

40 CFR part 170. This Standard contains requirements for the protection of agricultural workers 

on farms, forests, nurseries, and greenhouses, and handlers of agricultural pesticides. It 

contains requirements for training, decontamination, notification, and emergency assistance. It 

also contains specific instructions and exceptions pertaining to the statements on this label 

about personal protective equipment (PPE) and restricted-entry interval. The requirements in 

this box only apply to uses of this product that are covered by the Worker Protection Standard. 

Do not enter or allow worker entry into treated areas during the restricted entry interval 

(REI) of 12 hours except for automatic fogger use in greenhouses (See “Automatic Cold 

Fogger Use in Greenhouses” below). 

PPE required for early entry to treated areas that is permitted under the Worker Protection 

Standard and that involves contact with anything that has been treated, such as plants, soil, or 

water is: 

• Coveralls 

• Chemical-resistant gloves made of any waterproof material – Category A (e.g., natural 

rubber ≥ 14 mils). 

• Shoes plus socks 

Automatic Cold Fogger Use in Greenhouses 

• If there is no ventilation, the REI is 24 hours.

Early Entry based upon Ventilation Criteria 

• Early entry is permitted (with the PPE listed above) and respiratory protection consisting 

of a protection factor (PF) 10 respirator fitted with an organic-vapor removing filter) after 

four (4) hours to perform short duration activities such as opening windows or turning on 

fans or ventilation systems.

• Early entry is permitted (with the PPE listed above) after two (2) hours of ventilation 

using fans or other mechanical ventilation systems. 

• Early entry is permitted (with the PPE listed above) after four (4) hours of ventilation 

using vents, windows or other passive ventilation. 

• Early entry is permitted (with the PPE listed above) after ten (10) complete air 

exchanges have been completed. 

After 12 hours, if the greenhouse has been ventilated according to the above criteria, no PPE is 

required to enter the treated area.

 
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NON-AGRICULTURAL USE REQUIREMENTS 

The requirements in this box apply to uses of this product that are NOT within the scope of the 

Worker Protection Standard for agricultural pesticides (40 CFR Part 170). The WPS applies 

when this product is used to produce agricultural plants on farms, forests, nurseries, or 

greenhouses 

Do not enter treated areas without protective clothing until sprays have dried 

FAILURE TO FOLLOW THE DIRECTIONS FOR USE AND PRECAUTIONS ON THIS LABEL 

MAY RESULT IN CROP INJURY, POOR INSECT CONTROL, AND/OR ILLEGAL RESIDUES. 

USE INFORMATION 

Mainspring Insecticide is a broad-spectrum insecticide that is effective when applied at label 

rates to the foliage, soil and growing media. Mainspring Insecticide is active against listed 

sucking and chewing insect pests by contact and ingestion. 

Plant Safety 

Mainspring Insecticide is safe on most ornamental plants. Determine the plant safety of 

Mainspring Insecticide applied alone to a particular plant or with a particular tank mix, including 

adjuvants. Test Mainspring Insecticide alone or the mixture to be applied on a small number of 

plants to determine any adverse plant safety effects before making large scale applications. 

Among container-grown ornamentals and ornamentals grown in planting or liner beds, some 

plant species may be sensitive to fertilizers. Determine the plant safety of Mainspring 

Insecticide applied with fertilizers. Test the mixture on a small number of plants to determine 

any adverse plant safety effects before making large scale applications.. 

Applications of Mainspring Insecticide to yellow varieties of Honey Locust (Gleditsia triacanthos) 

may result in leaf chlorosis and leaf abscision. The effects are temporary. Test Mainspring 

Insecticide alone or the mixture to be applied on a small number of the Honey Locust varieties 

you intend to treat and determine any adverse plant safety effects before making large scale 

applications.. 

Resistance Management 

Some insect pests are known to develop resistance to products after repeated use. Because 

resistance development cannot be predicted, the use of this product should conform to sound 

resistance management strategies established for the crop and use area. Syngenta 

encourages responsible product stewardship to ensure effective long-term control of the insects 

on this label. 

Mainspring Insecticide contains a Group 4A insecticide (thiamethoxam, belonging to the 

neonicotinoid class of chemistry) and a Group 28 insecticide (cyantraniliprole, belonging to the 

diamide class of chemistry). Insect biotypes with acquired or inherent resistance to Group 4A or 
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Group 28 insecticides may eventually dominate the insect population if Group 4A or Group 28 

insecticides are used repeatedly as the predominant method of control for targeted species. 

This may result in partial or total loss of control of those species by Mainspring Insecticide or 

other Group 4A or Group 28 insecticides. 

If resistance to this product develops in your area, this product, or other products with a similar 

mode of action, may not provide adequate control. If poor performance cannot be attributed to 

improper application or extreme weather conditions, a resistant strain of insect may be present. 

If you experience difficulty with control and resistance is a reasonable cause, immediately 

consult your local company representative or agricultural advisor for the best alternative method 

of control for your area. 

In order to maintain susceptibility to these classes of chemistry: 

• Avoid using Group 4A and/or Group 28 insecticides exclusively for season long control of 

insect species with more than one generation per crop season. 

• For insect species with successive or overlapping generations, apply Mainspring Insecticide 

or other Group 4A and/or Group 28 insecticides using a “treatment window” approach. A 

treatment window is a period of time as defined by the stage of crop development and/or the 

biology of the pests of concern. Within the treatment window, depending on the length of 

residual activity, there may either be single or consecutive applications (seed treatment, soil, 

foliar, unless otherwise stated in the Directions for Use) of the Group 4A and/or Group 28 

insecticides. Do not exceed the maximum Mainspring Insecticide allowed per growing 

season. 

• Following a treatment window of Group 4A and/or Group 28 insecticides, rotate to a 

treatment window of effective products with a different mode of action before making 

additional applications of Group 4A and/or Group 28 insecticides. 

• A treatment window rotation, along with other IPM practices for the crop and use area, is 

considered an effective strategy for preventing or delaying a pest’s ability to develop 

resistance to these classes of chemistry. 

• If resistance is suspected, do not reapply Mainspring Insecticide or other Group 4A or Group 

28 insecticides. 

Other Insect Resistance Management (IRM) practices include: 

 Incorporating IPM techniques into your insect control program. 

 Monitoring treated insect populations for loss of field and greenhouse efficacy. 

 Using tank-mixtures or premixes with insecticides from a different target site of action group 

as long as the involved products are all registered for the same crop outlet and effective 

rates are applied. 

For additional information on Insect Resistance Management: 

 Contact your local extension specialist, certified crop advisor and/or product manufacturer 

for additional insect resistance management recommendations. 

 Visit the Insecticide Resistance Action Committee (IRAC) on the web at 

http://www.irac-online.org/. 

 
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POLLINATOR PRECAUTIONS 

 Mainspring Insecticide is highly toxic to bees exposed to direct treatment on blooming crops 

or weeds and may cause possible effects to pollinators from exposure to translocated 

residues in blooming crops. 

 Do not apply Mainspring Insecticide or allow it to drift to blooming crops while bees are 

foraging in/or adjacent to the treatment area. This is especially critical if there are adjacent 

orchards that are blooming (Refer to Spray Drift Precautions for additional information). 

 If bees are foraging in the ground cover and it contains any blooming plants or weeds, 

always remove flowers before making an application. This may be accomplished by 

mowing, disking, mulching, flailing, or applying a labeled herbicide. 

 Consult with your local cooperative extension service or state agency responsible for 

regulating pesticide use for additional pollinator safety practices. 

MIXING PROCEDURES 

Prepare only the amount of spray mixture that is needed for the immediate application. 

Thoroughly clean spray equipment before using this product. Vigorous agitation is necessary 

for proper dispersal of the product. Maintain maximum agitation throughout the spraying 

operation. 

Do not let the spray mixture stand overnight in the spray tank. Flush the spray equipment 

thoroughly following each use and apply the rinsate to a previously treated area. 

Mainspring Insecticide Applied Alone 

Add 1/2 of the required amount of water to the mix tank. With the agitator running, add the 

Mainspring Insecticide to the tank. Continue agitation while adding the remainder of the water. 

Begin application of the solution after the Mainspring Insecticide has completely dispersed into 

the mix water. Maintain agitation until all of the mixture has been applied. 

Tank Mix Compatibility 

Mainspring Insecticide is compatible with most insecticide, fungicide, and foliar nutrients 

products. However, test the physical compatibility of Mainspring Insecticide with tank-mix 

partners before use. To determine the physical compatibility of Mainspring Insecticide with 

other products, use a jar test, as described below. 

Using a quart jar, add the proportionate amounts of the products to 1 qt. of water. Add wettable 

powders and water-dispersible granular products first, then liquid flowables, and emulsifiable 

concentrates last. After thoroughly mixing, let stand for at least 5 minutes. If the combination 

remains mixed or can be remixed readily, it is physically compatible. Once compatibility has 

been proven, use the same procedure for adding required ingredients to the spray tank. 

 
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Mainspring Insecticide + Tank Mixtures 

Add 1/2 of the required amount of water to the mix tank. Start the agitator running before 

adding any tank mix partners. Add the tank mix partners in this order: products packaged in 

water-soluble packaging, wettable powders, wettable granules (dry flowables) such as 

Mainspring Insecticide, liquid flowables, liquids and emulsifiable concentrates. Always allow 

each tank mix partner to become fully dispersed before adding the next product. Provide 

sufficient agitation while adding the remainder of the water. Maintain agitation until all the 

mixture has been applied. 

Note: When using Mainspring Insecticide in tank mixtures, add all products in water-soluble 

packaging to the tank before any other tank mix partner, including Mainspring Insecticide. Allow 

the water-soluble packaging to completely dissolve and the product(s) to completely disperse 

before adding any other tank mix partner to the tank. 

When an adjuvant is to be used with this product, use an adjuvant that meets the standard of 

the Chemical Producers and Distributors Association (CPDA) adjuvant certification program. 

Mainspring Insecticide is compatible with most commonly used pesticides, crop oils, adjuvants, 

and nutritional sprays. However, since it is not possible to test all possible mixtures, the user 

should pre-test to assure the physical compatibility and lack of phytotoxic effect of any proposed 

mixtures with Mainspring Insecticide. 

If using Mainspring Insecticide in a tank mixture, observe all directions for use, crop/sites, use 

rates, dilution ratios, precautions, and limitations which appear on the tank mix product label. 

Do not exceed any label dosage rate, and follow the most restrictive label precautions and 

limitations. Do not mix this product with any product, which prohibits such mixing. Tank 

mixtures or other applications of products referenced on this label are permitted only in those 

states in which the referenced products are labeled. 
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APPLICATION PROCEDURES 

Foliar Applications 

Make foliar applications in an adequate water volume to achieve thorough and uniform 

coverage without excessive runoff (to drip). Use of an adjuvant applied with Mainspring 

Insecticide may increase efficacy. Select an adjuvant that does not bind Mainspring Insecticide 

to the leaf surface, limiting absorption into the foliage. Mainspring Insecticide can be applied in 

a range of spray volumes (concentrate to dilute spray volumes), provided thorough and uniform 

coverage is obtained. 

Handheld Application Equipment 

Applications can be made through most types of low pressure handheld application equipment. 

DO NOT apply through any type of handheld fogger equipment. 

DO NOT apply with aerial equipment. 

Automatic Cold Fogger Applications – Greenhouses 

Applications can be made in greenhouses with automatic cold fogger equipment. Apply the 

same amount of Mainspring Insecticide per unit area as would be applied in a dilute spray 

volume over the same area. 

Do not apply through fogger equipment requiring workers to be present in the greenhouse 

during the fogger application. 

Important: Read and follow the REI and PPE requirements for “Automatic Cold Fogger Use 

in Greenhouses” in the Worker Protection Standard AGRICULTURAL USE REQUIREMENTS 

box. 

Soil or Soil-less Medium Applications 

Mainspring Insecticide is effective as a soil and systemic insecticide when applied to the soil 

using band, broadcast or drench applications. When applying Mainspring Insecticide as a 

drench to plants in pots and containers, apply enough solution to sufficiently wet 1⁄2 -3⁄4 of the 

root zone without allowing runoff out of the container. With irrigation or rainfall, move 

Mainspring Insecticide into the root zone of plants or the location of soil-dwelling pests, 

preferably within 3 days of treatment and, optimally, within 24 hours. Excessive watering or 

heavy rainfall may reduce the effectiveness of Mainspring Insecticide. Allow a minimum of 7 

days after watering-in for maximum uptake of Mainspring Insecticide by the plant’s root system. 

Do not apply to soils or growing media above field or pot capacity. Do not apply to waterlogged 

soil or growing media. 

 
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Application Timing 

Begin foliar applications when labeled pests first appear or when economic thresholds have 

been reached. 

For applications made to growing media (soil or soil-less media), Mainspring Insecticide must 

move to the feeding site of the target pest, whether this is in the root zone or the above ground 

portion of the host plant. Therefore, control of pests from the systemic activity of Mainspring 

Insecticide may be delayed for 1 or more weeks depending on plant size, rate of uptake from 

the soil, or rate of translocation within the plant, etc. 

Systemic activity in large plants such as those in field nurseries may require several weeks for 

control of stem and foliar pests. Apply Mainspring Insecticide preventatively to plants having 

low economic thresholds or are prone to infestation by listed insect pests. 

Application through Irrigation Systems 

Apply Mainspring Insecticide only through micro-irrigation systems (for example, drip, trickle, 

spaghetti tubes, and micro-sprinklers), overhead irrigation, ebb and flood irrigation, or hand held 

or motorized calibrated irrigation equipment. Do not apply this product through any other type of 

irrigation equipment. Do not overwater for a minimum of 7 days after watering-in for maximum 

uptake of Mainspring Insecticide by the plant’s root system. See additional precautions 

regarding irrigation system application below. 

Chemigation 

Uniform Water Distribution and System Calibration: The irrigation system must provide 

uniform distribution of treated water. Plant injury, lack of effectiveness, or illegal pesticide 

residues in the plant may result from non-uniform distribution of treated water. 

The system must be calibrated to uniformly apply the rates specified. If you have questions 

about calibration, you should contact State Extension Service specialists, equipment 

manufactures or other experts. 

Do not connect an irrigation system (including greenhouse systems) used for pesticide 

application to a public water system unless the pesticide label-prescribed safety devices for 

public water systems are in place. 

Chemigation Monitoring: A person knowledgeable of the Chemigation system and 

responsible for its operation, or under the supervision of the responsible person, shall shut the 

system down and make necessary adjustments should the need arise. 

Required System Safety Devices: The system must contain a functional check valve, vacuum 

relief valve, and low-pressure drain appropriately located on the irrigation pipeline to prevent 

water source contamination from backflow. 

The pesticide injection pipeline must contain a functional, automatic, quick-closing check valve 

to prevent the flow of fluid back toward the injection pump. 
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The pesticide injection pipeline must also contain a functional, normally closed, solenoidoperated valve located on the intake side of the injection pump and connected to the system 

interlock to prevent fluid from being withdrawn from the supply tank when the irrigation system is 

either automatically or manually shut down. 

The system must contain functional interlocking controls to automatically shut off the pesticide 

injection pump when the water pump motor stops. 

The irrigation line or water pump must include a functional pressure switch, which will stop the 

water pump motor when the water pressure decreases to the point where pesticide distribution 

is adversely affected. 

Systems must use a metering pump, such as a positive displacement injection pump (e.g., 

diaphragm pump or Venturi injector) effectively designed and constructed of materials that are 

compatible with pesticides and capable of being fitted with a system interlock. 

Do not apply when wind speed favors drift beyond the area intended for treatment. 

Specific Instructions for Public Water Systems

Public water system means a system for the provision to the public of piped water for human 

consumption if such system has at least 15 service connections or regularly serves an average 

of at least 25 individuals daily at least 60 days out of the year. 

Chemigation systems connected to public water systems must contain a functional, reducedpressure zone, back-flow preventer (RPZ) or the functional equivalent in the water supply line 

upstream from the point of pesticide introduction. As an option to the RPZ, the water from the 

public water system should be discharged into a reservoir tank prior to pesticide introduction. 

There shall be a complete physical break (air gap) between the flow outlet end of the fill pipe 

and the top or overflow rim of the reservoir tank of at least twice the inside diameter of the fill 

pipe. 

The pesticide injection pipeline must contain a functional, automatic, quick-closing check valve 

to prevent the flow of fluid back toward the injection pump. 

The pesticide injection pipeline must contain a functional, normally closed, solenoid-operated 

valve located on the intake side of the injection pump and connected to the system interlock to 

prevent fluid from being withdrawn from the supply tank when the irrigation system is either 

automatically or manually shut down. 

The system must contain functional interlocking controls to automatically shut off the pesticide 

injection pump when the water pump motor stops or in cases where there is no water pump, 

when the water pressure decreases to the point where pesticide distribution is adversely 

affected. 

Systems must use a metering pump, such as a positive displacement injection pump (e.g., 

diaphragm pump or Venturi injector) effectively designed and constructed of materials that are 

compatible with pesticides and capable of being fitted with a system interlock. 

Do not apply when wind speed favors drift beyond the area intended for treatment. 
-13- 

Ebb and Flow and Flood Floor Application 

To determine the water volume uptake of Mainspring Insecticide in ebb and flow and flood floor 

applications, bring a minimum of 10 plants up to a known field capacity and allow them to dry 

out for one to two days. Re-wet these plants to determine how much water on average each 

plant will absorb to bring it back to field capacity. Use the water volume absorbed per plant, 

multiply by the number of pots of the same size being treated, and add the minimum water 

volume to irrigate the area. This should minimize the return back to the storage tank. Re-use 

the returned volume with subsequent irrigation or nutrients on the same plants. Dilute 

Mainspring Insecticide in a minimum of 100 gallons for ebb flow and flood floor application. 

Spray Drift Precautions 

As with all crop protection products, it is important to avoid off-target movement. Do not allow 

spray to drift onto adjacent land, crops, or aquatic areas. To avoid spray drift: 

• Make applications when wind velocity favors on-target product deposition (approximately 3-

10 mph). Do not apply when wind velocity exceeds 10 mph. Do not make applications 

when wind gusts approach 10 mph. 

• Do not make applications when wind direction is toward the aquatic area to reduce the risk 

of exposure to sensitive aquatic areas. 

• Do not cultivate or plant crops within 25 ft. of the aquatic area as to allow growth of a 

vegetative filter strip. 

• Do not make applications during temperature inversions. Inversions are characterized by 

stable air and increasing temperatures with increased height above the ground. Mist or fog 

may indicate the presence of an inversion in humid areas. The applicator may detect the 

presence of an inversion by producing smoke and observing a smoke layer near the ground 

surface. 

• Use the largest droplet size consistent with good pest control. Small droplets are more 

prone to spray drift, and can be minimized by appropriate nozzle selection, by orienting 

nozzles away from the air stream as much as possible, and by avoiding excessive spray 

boom pressure. 

• Apply as close to target plants as practical to obtain a good spray pattern for adequate 

coverage. Do not make applications more than 10 ft. above the crop canopy. 
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SPECIFIC USE DIRECTIONS 

Foliar Applications 

Ornamental plants, fruit and nut trees (non-bearing), and forest seedlings grown in 

greenhouses, lath and shade houses, containers, field nurseries and interiorscapes

Pests Rate Use Restrictions 

Ants (excluding harvester, 

carpenter and Pharaoh 

ants) 

Aphids 

Beet Armyworm 

Cabbage Looper 

Cabbage Webworm 

Corn Earworm 

Diamondback Moth 

Fall Armyworm 

Flea Beetles 

Imported Cabbageworm 

Southern Armyworm 

Sugarbeet Armyworm 

Yellowstriped Armyworm 

2.5-5.0 oz./100 gal. 

or 

5-10.0 oz./A 

Make the first application when economic 

action levels for the target pest are 

reached. For crops without action levels, 

make the first application before pest 

populations cause significant damage to 

the host plant. Re-apply as needed, but 

no sooner than every 14 days. 

Apply higher use rates in rate range for 

longer control or high insect populations. 

For leaf gall forming insects, apply during 

egg laying of the generation being 

targeted. 

For concentrated spray volumes, apply 

the same amount of product per unit area 

as would be applied with dilute spray 

volumes.

Adelgids (including Hemlock 

Woolly Adelgid) 

Lace Bugs 

Leaf Beetles 

Leafhoppers 

Leafminers 

Leaf gall forming insects 

Mealybugs 

Midges 

Plant Bug 

Psyllids (including Asian 

Citrus Psyllid) 

Sawflies 

Soft Scales 

Thrips – foliar feeding 

Whiteflies 

10.5 oz./100 gal. 

or 

10.5 oz./A 

• Do not exceed 21 oz./A per crop or year. 

• For specific information about developmental stages of the target pest, associated damage 

and action thresholds to properly time applications, consult with your State Cooperative 

Extension Service. 

 
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Applications to Soil or Other Growing Media 

Ornamental plants, fruit and nut trees (non-bearing) and forest seedlings grown in 

greenhouses, lath and shade houses, containers, field nurseries and interiorscapes 

Pests Rate Use Restrictions 

Aphids 

Fungus gnats 

Leaf Beetles 

Leafminers 

Mealybugs 

Root Aphid 

Root Weevil larvae 

(including Diaprepes 

abbreviatus) 

Soft Scales 

Thrips – foliar feeding 

(suppression) 

Whiteflies 

5-10.5 oz./100 gal. 

or 

10.5 oz./A 

 

Apply to the soil or growing media to help 

prevent pests in situations where tolerance of 

insects or damage is low. Allow a minimum 

of 1 week for smaller plants and at least 2 

weeks for large plants (typically found in 

nurseries, plantations) to translocate 

Mainspring Insecticide to feeding sites of the 

target pest. 

Re-apply as needed, but no sooner than 

every 14 days. 

Apply as a broadcast, band or drench. 

Larvae (Grubs) of: 

Aphodius spp. 

Asiatic garden beetle 

Billbugs 

European chafer 

Green June beetle 

Japanese beetle 

May or June beetle 

Northern masked chafer 

Oriental beetle 

Scarab beetle 

Southern masked chafer 

7.5-10.5 oz./100 gal. 

Apply from adult flight through peak egg 

hatch of the targeted species. 

Apply as a drench treatment to containers 

and over the active root zone. 

For drench and chemigation applications 

made to containerized plant material, apply 

sufficient volume to moisten the media 

around the root zone without loss from the 

bottom of the container. 

Fire Ants 1.3-3.8 oz./10 gal. 

Individual Mound Treatment: For small 

mounds (<6 inch in diameter) apply 1 gal. of 

water per mound and for larger mounds apply 

2-3 gal. of dilute solution per mound for 

optimum control. Direct the application to the 

center of the mound, including a 6-inch 

diameter circle. 

• For broadcast applications, typical water volume is 1.5 - 5 gals./1,000 sq. ft. 

• Do not exceed 21 oz./A per crop or year. 

• Do not over-water for a minimum of 7 days after watering in for maximum uptake of 

Mainspring Insecticide by the plant root system. 

• For specific information about developmental stages of the target pest, associated 

damage, and action thresholds to properly time applications, consult with your State 

Cooperative Extension Service. 

 
-16- 

Banded Application 

For banded applications, apply uniformly over the row or active root zone in a minimum water 

volume of 5 gallons per 1,000 linear feet. For optimum activity, rainfall or irrigation is necessary 

within 24 hours of application. 

Mainspring Insecticide rate (ounces of product) per 1,000 linear feet of row for specific 

row spacing. 

Rate/A 

Lb 

ai./A 

Row Spacing 

3 ft. 4 ft. 4.5 ft. 5 ft. 6 ft. 7 ft. 8 ft. 9 ft. 10 ft. 11 ft. 12 ft. 

10.5 

oz./A 0.26 0.7 1.0 1.1 1.2 1.4 1.7 1.9 2.2 2.41 2.66 2.9 

Drench Application 

When applying Mainspring Insecticide as a drench, apply enough solution to sufficiently wet 1⁄2 -

3⁄4 of the root zone without allowing runoff out of the container. Use the following chart as a 

guideline for the number of pots that this volume will treat based on the size of the pot and 

drench volume. Use higher drench volumes for woody ornamentals, containers having multiple 

plants, and those crops with longer production times or needing longer protection. 

Note: Drench volumes will vary based on the porosity of the growing media. Conduct your own 

tests to determine correct drench volumes for your growing media. 

Pot Size 

Suggested Drench Volume 

fl. oz./pot 

Pots Treated per 

100 gal. 

4 inch standard 2-3 6,400 - 4,267 

6 inch standard 3-4 4,267 -3,200 

8 inch standard 5-10 2,560 – 1,280 

10 inch standard 12.5 - 25 1,024 - 512 

 
-17- 

Foliar Application to Vegetable Plants Grown for Re-sale to Consumers 

For tomatoes, peppers, eggplant, and cucurbit plants grown for re-sale to consumers 

Crop Pests Rate Use Restrictions 

Fruiting Vegetables 

Eggplant 

Ground-cherry 

Pepino 

Peppers (bell, chili, 

cooking, pimento, 

and sweet) 

Tomatillo 

Tomato 

Aphids 

Beet Armyworm 

Colorado Potato 

Beetle 

Fall Armyworm 

Flea Beetles 

Hornworm species 

Leafhoppers 

Leafminers 

Loopers 

Potato Psyllid 

Southern Armyworm 

Thrips 

Tomato Fruitworm 

Tomato Pinworm 

Whiteflies 

Yellowstriped 

Armyworm 

5.0–7.0 oz./A 

or 

0.6–0.8 oz./ 5,000 sq. ft. 

Apply before pests 

reach damaging levels. 

Apply higher rates 

within the listed rate 

range for heavy 

infestations. 

• Do not exceed 14.0 oz./A (0.8 oz./5,000 sq. ft.) of Mainspring Insecticide per crop.

• Allow at least 5 days between applications. 

Cucurbit Vegetables 

Chayote 

Chinese waxgourd 

Citron melon 

Cucumber 

Edible gourd 

Gherkin 

Momordica species 

Muskmelon 

Pumpkin 

Squash: summer 

and winter 

Watermelon 

Aphids 

Cabbage Looper 

Corn Earworm 

Cucumber Beetles

Flea Beetles 

Leafminers 

Melonworm 

Pickleworm 

Rindworm species 

complex 

Tobacco Budworm 

Whiteflies 

5.0–7.0 oz./A 

or 

0.6–0.8 oz./ 5,000 sq. ft. 

Apply before pests 

reach damaging levels. 

Apply higher rates 

within the listed rate 

range for heavy 

infestations. 

• Do not exceed 14 oz./A (1.26 oz./5,000 sq. ft.) of Mainspring Insecticide per crop.

• Allow at least 5 days between applications. 

 
-18- 

Brassica (Cole) 

Leafy Vegetables 

Head & Stem 

Brassica 

Broccoli, Broccoli 

Chinese (gai lon) 

Brussels sprouts 

Cabbage 

Cabbage, Chinese 

(napa) 

Cabbage, Chinese 

mustard (gai choy) 

Cauliflower 

Cavalo broccolo 

Kohlrabi 

Leafy Brassica

Greens 

Broccoli raab (rapini) 

Cabbage, Chinese 

(bok choy) 

Collards 

Kale 

Mizuna 

Mustard greens 

Mustard spinach 

Rape greens 

Alfalfa Looper 

Aphids 

Beet Armyworm 

Cabbage Looper 

Cabbage Webworm 

Corn Earworm 

Diamondback Moth 

Fall Armyworm 

Flea Beetles 

Imported 

Cabbageworm 

Leafminers (larvae) 

Sugarbeet 

Armyworm 

Thrips (Foliage 

Feeding)

Whiteflies 

Yellowstriped 

Armyworm 

5.0–7.0 oz./A 

or 

0.6–0.8 oz./ 5,000 sq. ft. 

Apply before pests 

reach damaging levels. 

Apply higher rates 

within the listed rate 

range for heavy 

infestations. 

• Do not exceed 14 oz./A (1.26 oz./5,000 sq. ft.) of Mainspring Insecticide per crop.

• Allow at least 5 days between applications. 

 
-19- 

STORAGE AND DISPOSAL 

Do not contaminate water, food, or feed by storage or disposal. 

Pesticide Storage 

Store in a cool, dry place. 

Pesticide Disposal 

Pesticide wastes may be toxic. Improper disposal of excess pesticide, spray mixture, or rinsate 

is a violation of Federal law. If these wastes cannot be used according to label instructions, 

contact your State Pesticide or Environmental Control Agency, or the Hazardous Waste 

representative at the nearest EPA Regional Office for guidance in proper disposal methods. 

For minor spills, leaks, etc., follow all precautions indicated on this label and clean up 

immediately. Take special care to avoid contamination of equipment and facilities during 

cleanup procedures and disposal of wastes. In the event of a major spill, fire, or other 

emergency, call 1-800-888-8372, day or night. 

Container Handling 

Non-refillable container. Do not reuse or refill this container. 

Triple rinse container (or equivalent) promptly after emptying. Triple rinse as follows: empty the 

remaining contents into application equipment or a mix tank. Fill the container 1⁄4 full with water 

and recap. Shake for 10 seconds. Pour rinsate into application equipment or a mix tank for 

later use or disposal. Drain for 10 seconds after the flow begins to drip. Repeat this procedure 

two more times. Offer for recycling if available or puncture and dispose of in a sanitary landfill, 

or by incineration, or by other procedures allowed by state and local authorities. 

Mainspring, the ALLIANCE FRAME, the SYNGENTA Logo, and the PURPOSE ICON are 

Trademarks of a Syngenta Group Company 

©2012 

For non-emergency (e.g., current product information) call 

Syngenta Crop Protection at 1-800-334-9481. 

Manufactured for: 

Syngenta Crop Protection, LLC 

P.O. Box 18300 

Greensboro, North Carolina 27419-8300 

Mainspring Insecticide RUEE A-M(draft-b)clean-lg-6-6-12 

000100-xRUEE.20120606.b.Mainspring.pdf 
-20- 

(Non-detachable Base Label) 

Mainspring Insecticide 

 

GROUP 4A 28 INSECTICIDE

For foliar and systemic control of listed insect pests in ornamental plants, fruit and nut trees 

(non-bearing), forest seedlings (liner production and field application) and listed vegetables 

grown for transplant. 

Active Ingredient: 

Thiamethoxam1

 ......................................................................................................... 20.0% 

Cyantraniliprole2

 ........................................................................................................ 20.0% 

Other Ingredients: 60.0% 

Total: 100.0% 

1

CAS No. 153719-23-4 

2

CAS No. 736994-63-1 

Mainspring Insecticide is a water-dispersible granule and contains that contains 3.2 ounces of 

active ingredient of thiamethoxam and 3.2 ounces of cyantraniliprole per pound of formulated 

product 

KEEP OUT OF REACH OF CHILDREN. 

CAUTION 

See additional precautionary statements and directions for use in booklet.

EPA Reg. 100-RUEE 

EPA Est. XXXXX 

SCP RUEE A-M(draft-b Mainspring Insecticide) 

Net Weight 

 
-21- 

PRECAUTIONARY STATEMENTS 

Hazards to Humans and Domestic Animals 

CAUTION 

Causes moderate eye irritation. Harmful if swallowed, absorbed through the skin or inhaled 

Avoid contact with eyes, skin or clothing. Avoid breathing dust. Wash thoroughly with soap and 

water after handling, and before drinking, eating, chewing gum, using tobacco, or using the 

toilet. Remove and wash contaminated clothing before reuse. 

FIRST AID 

If in eyes • Hold eye open and rinse slowly and gently with water for 15-20 

minutes. 

• Remove contact lenses, if present, after the first 5 minutes, then 

continue rinsing eye. 

• Call a poison control center or doctor for treatment advice. 

If inhaled • Move person to fresh air. 

• If person is not breathing, call 911 or an ambulance, then give 

artificial respiration, preferably by mouth-to-mouth, if possible. 

• Call a poison control center or doctor for further treatment advice. 

If swallowed • Call a poison control center or doctor immediately for treatment 

advice. 

• Have person sip a glass of water if able to swallow. 

• Do not induce vomiting unless told to do so by the poison control 

center or doctor. 

• Do not give anything by mouth to an unconscious person.

If on skin or 

clothing 

• Take off contaminated clothing. 

• Rinse skin immediately with plenty of water for 15-20 minutes. 

• Call a poison control center or doctor for treatment advice. 

Have the product container or label with you when calling a poison control center or doctor, or 

going for treatment. 

HOT LINE NUMBER 

For 24-Hour Medical Emergency Assistance (Human or Animal) 

or Chemical Emergency Assistance (Spill, Leak, Fire or Accident) 

Call 

1-800-888-8372 

 
-22- 

STORAGE AND DISPOSAL 

Do not contaminate water, food, or feed by storage or disposal. 

Pesticide Storage 

Store in a cool, dry place. 

Pesticide Disposal 

Pesticide wastes may be toxic. Improper disposal of excess pesticide, spray mixture, or rinsate 

is a violation of Federal law. If these wastes cannot be used according to label instructions, 

contact your State Pesticide or Environmental Control Agency, or the Hazardous Waste 

representative at the nearest EPA Regional Office for guidance in proper disposal methods. 

For minor spills, leaks, etc., follow all precautions indicated on this label and clean up 

immediately. Take special care to avoid contamination of equipment and facilities during 

cleanup procedures and disposal of wastes. In the event of a major spill, fire, or other 

emergency, call 1-800-888-8372, day or night. 

Container Handling 

Non-refillable container. Do not reuse or refill this container. 

Triple rinse container (or equivalent) promptly after emptying. Triple rinse as follows: empty the 

remaining contents into application equipment or a mix tank. Fill the container 1⁄4 full with water 

and recap. Shake for 10 seconds. Pour rinsate into application equipment or a mix tank for 

later use or disposal. Drain for 10 seconds after the flow begins to drip. Repeat this procedure 

two more times. Offer for recycling if available or puncture and dispose of in a sanitary landfill, 

or by incineration, or by other procedures allowed by state and local authorities. 

Refer to Environmental Hazards and Physical or Chemical Hazards and Chemigation 

sections in booklet. 

The SYNGENTA Logo, is a Trademark of a Syngenta Group Company 

©2012 

Syngenta Crop Protection, LLC 

P.O. Box 18300 

Greensboro, North Carolina 27419-8300 

Mainspring Insecticide RUEE A-M(draft-b)clean-lg-6-6-12 

000100-xRUEE.20120606.b.Mainspring.pdf