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For control of insect and mite pests on vegetables, fruits, ornamental plants, and other 

crops grown outdoors, in greenhouses or other cover, or in nurseries.

ACTIVE INGREDIENT:

Isaria fumosorosea Apopka Strain 97 (ATCC 20874) .............................................. 20%*

(formerly Paecilomyces fumosoroseus Apopka strain 97)

OTHER INGREDIENTS:...................................................................................................... 80%

TOTAL:.................................................................................................................................. 100%

*Contains 1 x 109 CFU/g (equivalent to 0.014% technical grade active ingredient)

KEEP OUT OF REACH OF CHILDREN

CAUTION

Net Contents: 1 pound / 5 pounds / 66 pounds

MANUFACTURED BY: EPA Reg. No. 70051-19

Certis USA, L.L.C. EPA Est. No. 70051-CA-001

9145 Guilford Road, Suite 175

Columbia, MD 21046 Lot Number:

Expiration date:

FIRST AID

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. If product,

diluted in accordance with the directions for use, gets on skin, medical attention is not required.

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

going for treatment. Hot Line Number: 1-800-255-3924.
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PRECAUTIONARY STATEMENTS

HAZARDS TO HUMANS AND DOMESTIC ANIMALS

CAUTION

Harmful if swallowed, inhaled or absorbed through the skin. Avoid breathing spray mist. 

Causes moderate eye irritation. Avoid contact with skin, eyes or clothing. Wash thoroughly

with soap and water after handling and before eating, drinking, chewing gum, or using tobacco. 

Remove and wash contaminated clothing before reuse.

Personal Protective Equipment:

Applicators and other handlers must wear:

 Long-sleeved shirt and long pants.

 Shoes plus socks.

 Mixers, loaders, applicators and other handlers must wear a dust/mist filtering respirator 

(MSHA/NIOSH approval number prefix TC-21C), or a NIOSH approved respirator with 

prefix N-95, R-95, or P-95. 

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

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

USER SAFETY RECOMMENDATIONS:

User should:

 Wash hands before eating, drinking, chewing gum, using tobacco, or using the toilet.

 Remove clothing immediately if pesticide gets inside. Then wash thoroughly and put on 

clean clothing.

 Remove PPE immediately after handling this product. As soon as possible, wash thoroughly 

and change into clean clothing. 

ENVIRONMENTAL HAZARDS

For outdoor, non-greenhouse use, do not apply when bees are actively foraging. Do not apply 

directly to water, or to areas where surface water is present, or to intertidal areas below the mean 

high water mark. Do not contaminate water when disposing of equipment washwaters or rinsate. 

Do not allow contamination of or discharge into lakes, streams, ponds, or public waterways. 

Drift and runoff may be hazardous to aquatic organisms in water adjacent to treated areas. 

Apply this product only as specified in the label.

DIRECTIONS FOR USE

IT IS A VIOLATION OF FEDERAL LAW TO USE THIS PRODUCT IN A MANNER 

INCONSISTENT WITH ITS LABELING.

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.
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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, 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 

4 hours unless wearing appropriate PPE.

For entry into treated areas that are permitted under the Worker Protection Standard and that 

involves contact with anything that has been treated, such as plants, soil, or water, early-entry

workers must wear:

 Coveralls, over long sleeve shirt, long pants.

 Waterproof gloves.

 Shoes plus socks.

 A dust/mist filtering respirator (MSHA/NIOSH approval number prefix TC-21C), or a 

NIOSH approved respirator with prefix N-95, R-95, or P-95.

GENERAL

Mode of Action: Paecilomyces fumosoroseus, the active component in PFR-97TM, is a naturally 

occurring fungus which infects many insect and mite pests that occur on foliage and other aboveground plant, as well as many soil-dwelling pests. Under proper environmental conditions,

spores of the fungus attach to and penetrate the cuticle of the target pest. The fungus grows 

inside the insect causing its death. The fungus then emerges from the dead insect to release more 

spores to infect other insects. 

Monitoring of pest pressure is critical to the effective use of PFR-97TM. Efficacy results from 

germination and growth of the beneficial fungus over several days, so applications should start 

before pest numbers have reached crisis levels. PFR-97TM is most effective when application is 

initiated just before or at the first signs that target pests are present.

Optimal Environmental Conditions: PFR-97TM is most effective when relative humidity is 

80% or higher for 8-10 hours. Watering walkways, operating sprinklers, misters or cooling pads 

will increase humidity levels. Application at times of low air movement and moderate 

temperature (70-90F) will reduce drying conditions and maintain the effectiveness of the 

fungus.

Compatibility: PFR-97TM can be used in conjunction with most other pesticides and is 

compatible with beneficial arthropods. It can be mixed with copper-based fungicides without 

impacting performance. However, do not mix with other fungicides, or apply within 5 days of 

fungicide applications other than copper. PFR-97TM can be mixed with most insecticides for 

which such mixing is permitted by the label, in accordance with the most restrictive label 

limitations and precautions of all products used in the mixture. Do not exceed any label dosage 

rates. However, physical compatibility should be checked by mixing small quantities of each 

tank mix partner in correct proportions (“jar test”) prior to the first time such a mixture is 

attempted.
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DIRECTIONS FOR USE

GREENHOUSES (AND OTHER COVER), NURSERIES, AND LANDSCAPES:

For use on ornamental plants (foliage and flowering plants, cut flowers, greens, shrubs), 

vegetables, melons, strawberries, and other food crops (including transplants), herbs

and spices, nursery stock (including bearing and nonbearing fruit trees and grapevines).

Mix PFR-97TM in clean water at a rate of 14 to 28 ounces of product per 100 gallons of water. 

Agitate for 20-30 minutes before application to ensure a well-dispersed suspension. 

Product may be premixed with 5 gallons of water per pound of PFR-97TM and agitated 

continuously for 20-30 minutes to completely suspend and hydrate the spores. Dilute this 

suspension to the final volume for application. This suspension can also be metered (injected) 

into a chemigation system without further dilution if desired. 

Maintain agitation during application. Apply the suspension using one of the methods below, 

depending on target pest and application site (foliar or soil).

Foliar 

(spray) 

application

For control of 

whiteflies

(Bemisia and 

Trialeuroides

spp.), aphids, 

thrips, spider 

mites, leafminers

(Liriomyza spp.), 

citrus leafminers, 

mealybugs, 

psyllids, and plant 

bugs (Lygus spp.)

Apply to plants using pressurized spray equipment (such as backpack sprayer, 

tractor-mounted spray boom, hand-held spray gun or wand) mist-blower, cold 

fogger, electrostatic, or other applicator. 

Spray sufficient volume to achieve thorough coverage of leaves, flowers, 

fruit, and other above-ground plant parts with minimal run-off. 

Repeat applications at 3-10 day intervals over 2-3 weeks or as needed to 

maintain control. Frequent application may be required under dry conditions, 

during periods of increased pest build-up or reproduction, or rapid host plant 

growth. More frequent application at low rate (e.g. 14 - 16 oz/100 gal every 3

to 5 days) is more likely to improve results than using higher rates at low

frequency (e.g. 28 oz/100 gal every 10 days).

Use higher rates (24 - 28 oz/100 gal) when applying to large or dense plant 

canopies to ensure complete coverage.

Soil 

application

To control black 

vine weevil and 

other root 

weevils, crown 

weevils, thrips 

pupae, grape 

phylloxera, 

rootworms, 

wireworms, 

Coleoptera grubs

and larvae, 

Lepidoptera 

caterpillars and 

larvae,

symphylans

Drench application: Apply as a drench of 4 fluid ounces per pot for pots up 

to 6” diameter, or 8 fl. oz. for pots up to 12” diameter. For pots larger than 

12” in diameter, either apply 1 pint of drench per pot. 

Soil surface spray: Spray the suspension on the soil surface. If targeting 

root-feeding insects, follow immediately by sufficent water from a watering 

can, hose, or overhead sprinkler irrigation to carry the spores into the root 

zone.

Chemigation: PFR-97TM may also be applied through drip or trickle 

chemigation. Mix in water as described above and apply using standard 

injection equipment to introduce into the irrigation lines. See the 

“Chemigation Bulletin” below for additional information.

Soil injection against root-feeding insects: The PFR-97TM suspension may be 

injected directly into the soil surrounding roots using pressurized shank or 

other injector. Inject in sufficient volume of water to wet the entire root zone.
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FOR ALL OUTDOOR-GROWN FOOD, NON-FOOD, AND SEED CROPS, including 

fruiting and leafy vegetables, melons and other cucurbits, potatoes, beans, citrus, pome 

fruits, stone fruits, tree nuts, grapes, herbs, spices, strawberries, sweet corn, cut flowers 

and other field-grown ornamental plants.

Apply 1 to 2 pounds of PFR-97TM per acre in sufficient volume of water to attain thorough 

coverage of foliage, flowers, and fruit with minimal run-off.

Mix the required amount of product in clean water and agitate the spray mix for 20-30 minutes 

before application to ensure a well-dispersed suspension. 

For low-volume application, premix with at least 2 gallons of water per pound of PFR-97TM and 

agitated continuously for 20-30 minutes to completely suspend and hydrate the spores. Dilute 

this suspension to the final volume for application. This suspension can also be metered 

(injected) into a chemigation system without further dilution if desired. 

Maintain agitation during application. Apply the suspension using one of the methods below, 

depending on target pest and application site (foliar or soil). 

Foliar 

(spray) 

application

For control of 

whiteflies

(Bemisia and 

Trialeuroides

spp.), aphids, 

thrips, spider 

mites, broad 

mites, rust mites, 

leafminers 

(Liriomyza spp.), 

citrus leafminers, 

mealybugs, 

psyllids, and plant 

bugs (Lygus spp.)

Apply with pressurized spray equipment (such as backpack sprayer, tractormounted spray boom, hand-held spray gun or wand), air-assisted orchard 

sprayer, mist-blower, cold fogger, electrostatic, or other applicator. 

Repeat applications at 3-10 day intervals as needed to maintain control. 

Frequent application may be required under dry conditions, during periods of 

increased pest build-up or reproduction, or rapid host plant growth. 

More frequent application at low rate (1 lb/acre every 3 to 5 days, for 

example) is more likely to improve results than using higher rates at low

frequency (such as 2 lb/acre every 10 days).

Use higher rates (2 lb/acre) when applying to large or dense plant canopies to 

ensure complete coverage.

Soil 

application

To control black 

vine and other 

root weevils, 

thrips pupae, 

rootworms, 

wireworms, 

Coleoptera grubs 

and larvae, 

Japanese beetle; 

Lepidoptera 

caterpillars and 

larvae, grape 

phylloxera, 

symphylans.

Soil drench: Apply the PFR-97TM suspension as a 4” to 8” banded drench or 

coarse spray onto the soil surface in the seed furrow, or as a broadcast spray 

or drench onto the planting bed or at the base of the tree or vine. To control 

insects beneath the soil surface, incoporate with overhead sprinkler irrigation 

or light cultivation.

Chemigation: PFR-97TM may also be applied through drip, trickle, and

overhead or microjet sprinkler chemigation. Mix in water as described above 

and apply using standard injection equipment to introduce into the irrigation 

lines. See the “Chemigation Bulletin” below for additional information.

Soil injection against root-feeding insects: The PFR-97TM suspension may be 

injected directly into the soil surrounding roots using pressurized shank or 

other injector. Inject in sufficient volume of water to wet the entire root zone.
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STORAGE AND DISPOSAL

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

Pesticide Storage: Keep unopened product refrigerated (40-50°F) and dry. Seal out moisture 

from unused material by closing the bag tightly after squeezing out excess air. Keep unused 

product refrigerated in the original package and use within 30 days after opening.

Pesticide Disposal: Wastes resulting from the use of this product must be disposed of on site or 

at an approved waste disposal facility.

Container Handling: Non-refillable container. Completely empty bag into application 

equipment. Then dispose of empty bag in a sanitary landfill, or by incineration, or if allowed by 

state and local authorities, by burning. If burned, stay out of smoke.

WARRANTY

Certis USA, L.L.C. warrants that the material contained herein conforms to the description on the 

label and is reasonably fit for the purposes referred to in the directions for use. Timing and 

method of application, weather, watering practices, nature of soil, the insect problem, condition of 

the crop, incompatibility with other chemicals not specifically recommended, and other 

influencing factors in the use of this product are beyond the control of the seller. To the extent 

required by law, Buyer assumes all risks of use, storage or handling of this material not in strict 

accordance with directions given herein. NO OTHER EXPRESS OR IMPLIED WARRANTY 

OF THE FITNESS OR MERCHANTABILITY IS MADE.
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CHEMIGATION BULLETIN

GENERAL INFORMATION:

Apply this product through pressurized irrigation systems such as drip (trickle) irrigation 

(including micro-irrigation through spaghetti tubes or individual tubes) or sprinkler irrigation 

(impact or microsprinklers, overhead boom, solid set, lateral move, end tow, side-roll, center 

pivot, or hand move, including mist-type systems); through gravity flow systems such as flood, 

furrow, or border irrigation; or with hand-held calibrated irrigation equipment (such as a handheld wand with injector). Do not apply this product through any other type of irrigation system.

Crop injury or lack of effectiveness can result from non-uniform distribution of treated water.

If you have questions about calibration, contact State Extension Service specialists, equipment 

manufacturers 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.

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.

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, backflow 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 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.

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) 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. 
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Remove scale, pesticide residues, and other foreign matter from the chemical supply tank and 

injector system and flush with clean water before use. Failure to provide a clean tank, free of 

scale or residues may reduce effectiveness of this product.

DRIP (TRICKLE) AND MICRO-IRRIGATION CHEMIGATION:

1. 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.

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

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

3. 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.

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

pesticide injection pump when the water pump motor stops.

5. 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.

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

diaphragm pump) effectively designed and constructed of materials that are compatible with 

pesticides and capable of being fitted with a system interlock.

7. Dilute the product in water following the label mixing directions. It may be premixed in a 

supply tank with water, fertilizer, or other appropriate tank-mixed agricultural chemicals. 

Agitation is necessary. Apply to moderately moist soils. Use volumes that thoroughly wet 

the soil but that do not cause significant runoff or excessive drip from pots. Application 

should be continuous in sufficient water to apply the recommended rate evenly to the entire 

treated area.

SPRINKLER CHEMIGATION:

1. 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.

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

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

3. 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.

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

pesticide injection pump when the water pump motor stops.
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5. 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.

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

diaphragm pump) effectively designed and constructed of materials that are compatible with 

pesticides and capable of being fitted with a system interlock.

7. Dilute the product in water following the label mixing directions. It may be premixed in a 

supply tank with water, fertilizer or other appropriate tank-mixed agricultural chemicals. 

Agitation is necessary. Apply to moderately moist soils. Use volumes that thoroughly wet 

the soil but that do not cause significant runoff or excessive drip from pots. Application 

should be continuous in sufficient water to apply the recommended rate evenly to the entire 

treated area.

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

FLOOD, FURROW, OR BORDER CHEMIGATION:

1. Systems using a gravity flow pesticide dispensing system must meter the pesticide into the 

water at the head of the field and downstream of a hydraulic discontinuity such as a drop 

structure or weir box to decrease potential of water source contamination from the backflow 

if water flow stops.

2. Systems utilizing a pressurized water and pesticide injection system must meet the following 

requirements:

a. 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.

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

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

c. 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.

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

pesticide injection pump when the water pump motor stops.

e. 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.

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

diaphragm pump) effectively designed and constructed of materials that are compatible 

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

3. Dilute the product in water following the label mixing directions. It may be premixed in a 

supply tank with water, fertilizer, or other appropriate tank-mixed agricultural chemicals. 

Agitation is necessary. Apply to moderately moist soils. Use volumes that thoroughly wet 

the soil but that do not cause significant runoff. Application should be continuous in 

sufficient water to apply the recommended rate evenly to the entire treated area.