Abstract:
A method of operating an emanation system is disclosed that includes the step of providing a dispensing device containing an air treatment material and a substrate. The method further includes the steps of aligning a nozzle of the dispensing device with the substrate and actuating the dispensing device to spray an amount of the air treatment material onto at least a portion of the substrate.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application is a divisional of U.S. patent application Ser. No. 14/309,549, filed on Jun. 19, 2014, which claims priority to U.S. Provisional Application Ser. No. 61/840,561, filed Jun. 28, 2013, and to U.S. Provisional Application Ser. No. 61/944,307, filed Feb. 25, 2014. 
     
    
     REFERENCE REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
       [0002]    Not applicable. 
       SEQUENCE LISTING 
       [0003]    Not applicable. 
       BACKGROUND OF THE DISCLOSURE 
       [0004]    1. Field of the Disclosure 
         [0005]    The present disclosure relates to emanation systems with one or more substrates attached to a surface, and in particular, to a substrate with a visual guide disposed thereon and having one or more active release profiles. 
         [0006]    2. Description of the Background of the Disclosure 
         [0007]    Various emanation systems are known in the prior art that generally include a reservoir that holds a volatile material and optionally includes a housing or support structure to retain the reservoir. The prior art emanation systems typically either allow passive diffusion of the volatile material to occur without the aid of a dispensing mechanism or enhance and/or facilitate the release of the volatile material using a dispensing mechanism. Typical dispensing mechanisms used in emanation systems include a heating device and/or a fan that either heats and/or supplies air, respectively. 
         [0008]    Many passive emanation systems of the prior art utilize a solid or semi-solid block of material or a volatile material laden gel disposed within a housing. In particular, one prior art emanation system includes a container having a candle therein. When lit, the candle emits a volatile material. Another prior art emanation system uses a conical gel surface impregnated with a volatile material. The conical gel surface is disposed within a housing having an adjustable cap. The cap may be adjusted upwardly or downwardly to expose the surface area of the conical gel surface to varying degrees. In a different prior art emanation system, a reservoir having a semi-permeable film disposed thereon is used and has a volatile material disposed within the reservoir. The volatile material diffuses out of the reservoir through the semi-permeable membrane. Another prior art emanation system includes a substantially flat substrate having a volatile material thereon. The volatile material is slowly released into the surrounding atmosphere. 
         [0009]    One drawback of some of the aforementioned prior art emanation systems is that the substrate may be wetted with a volatile material that is released over a shortened time period. The release profile of the volatile material is generally constant in that the release rate of the volatile slowly decreases until the volatile is evaporated. In these systems, the emanation system only provides efficacy for a short period of time after application of the volatile to the substrate. 
         [0010]    Further, some prior art emanation systems are designed to emit an insecticide. Historically, the smell of the insecticide has been unpleasant, which sometimes discourages use of the emanation system. Some attempts have been made to mask the unpleasant odor associated with the use of insecticides through the incorporation of citronella oil into the emanation system. 
         [0011]    Further, in some instances, it is undesirable to keep air treatment materials within the home. Therefore, it is desirable to have an emanation system in the home that can be refilled by a third party such that the air treatment materials do not need to be kept in the home. In some instances, it may also be desirable to have the third party re-apply the air treatment materials to the emanation system so that individuals do not have to touch the material-laden surface of the substrate after use. 
         [0012]    Therefore, it would be desirable to have an inexpensive passive emanation system in the form of a wettable substrate that allows a user to apply an air treatment material thereto. It is further desirable to provide a system that allows the air treatment material to emanate at a high rate after the initial application of the air treatment material to the substrate, and further allows for continued efficacy by having a secondary substrate that releases the air treatment material at a slower rate than that of the substrate. Finally, it would be desirable to have a fragrance incorporated into the air treatment material, which acts to incentivize the user to use the emanation system, and also acts as a use-up cue that allows the user to determine when the air treatment material is no longer effective. 
       SUMMARY OF THE INVENTION 
       [0013]    According to a first aspect, an emanation system includes a substrate, a secondary substrate, and an air treatment material. The secondary substrate is adapted to be wetted with runoff from the air treatment material applied to the substrate. When applied, the air treatment material emanates from the substrate at a first release rate and from the secondary substrate at a second release rate. 
         [0014]    The following attributes may be combined individually or in any combination with the first aspect to form different embodiments of the first aspect: the substrate may include a substantially rectangular body and the secondary substrate may be disposed adjacent a lower edge of the body; the secondary substrate may be in communication with the substrate such that a rear surface of the secondary substrate is substantially flush with a front surface of the substrate; the substrate may include a polymer and the secondary substrate may include a cellulosic material; the substrate and the secondary substrate may define a substantially smooth surface; and the substrate may include a visual guide. 
         [0015]    According to a second aspect, an air treatment material includes a fragrance having a first efficacy time period and an active ingredient having a second efficacy time period. The air treatment material is provided as a microemulsion, and the first and the second efficacy time periods are substantially the same. 
         [0016]    The following attributes may be combined individually or in any combination with the second aspect to form different embodiments of the second aspect: the air treatment material may be applied to a polymer substrate and the active ingredient may be released therefrom at a rate of at least about 0.2 mg/hr; the fragrance may act as a use-up indicator to provide an olfactory cue that the second efficacy time period has ended; the active ingredient may be a pyrethroid; the air treatment material may further include a surfactant blend; the air treatment material may include about 4% fragrance and about 0.4% active ingredient; and the air treatment material may include about 90% of deionized water, about 3 to about 6% of the surfactant blend, about 2 to about 6% of the fragrance, and about 0.2 to about 1% of the active ingredient. 
         [0017]    According to a third aspect, a method of operating an emanation system includes the steps of providing a dispensing device containing an air treatment material and a substrate, aligning a nozzle of the dispensing device with the substrate, and actuating the dispensing device to spray an amount of the air treatment material onto at least a portion of the substrate. 
         [0018]    The following attributes may be combined individually or in any combination with the third aspect to form different embodiments of the third aspect: a secondary substrate may be designed to catch an amount of run off from the amount of air treatment material sprayed onto the substrate; the air treatment material may emanate from the substrate at a first release rate, and may emanate from the secondary substrate at a second release rate; the method of the third aspect may further include the step of filling the dispensing device; the nozzle may be aligned with a visual guide on the substrate; the amount of air treatment material sprayed may be about 3 grams; and the amount of the air treatment material sprayed onto the substrate may provide mosquito repellency and a pleasant fragrance to the room for a time period of about three days. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0019]      FIG. 1  is a perspective view of a first embodiment of an emanation system having a substrate and a dispensing device associated therewith; 
           [0020]      FIG. 2  is a perspective view of a substrate similar to that of  FIG. 1 , wherein the substrate is attached to a surface via an attachment mechanism; 
           [0021]      FIG. 3A  is a schematic of one embodiment of a substrate with a visual guide; 
           [0022]      FIG. 3B  is a schematic of another embodiment of a substrate with a visual guide; 
           [0023]      FIG. 3C  is a schematic of a different embodiment of a substrate with a visual guide; 
           [0024]      FIG. 3D  is a schematic of another embodiment of a substrate with a visual guide; 
           [0025]      FIG. 3E  is a schematic of one embodiment of a substrate with a visual guide; 
           [0026]      FIG. 3F  is a schematic of another embodiment of a substrate with a visual guide; 
           [0027]      FIG. 3G  is a schematic of a different embodiment of a substrate with a visual guide; 
           [0028]      FIG. 3H  is a schematic of another embodiment of a substrate with a visual guide; 
           [0029]      FIG. 4  is a front, right, top isometric view of a substrate similar to that of  FIG. 1 ; 
           [0030]      FIG. 5  is side elevational view of the substrate of  FIG. 4 ; 
           [0031]      FIG. 6  is a front, right, top isometric view of a different embodiment of a substrate; and 
           [0032]      FIG. 7  is a perspective view of the emanation system of  FIG. 1  in use. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0033]    As generally depicted in  FIGS. 1-7 , an emanation system  100  generally includes a substrate  102  and a dispensing device  104  designed to coat the substrate  102  with an air treatment material  106 . The emanation system  100  may be used in an enclosed area, such as an office, a living room, a bedroom, a kitchen, a screened in porch, a basement, or other suitable location. Prior to use, the substrate  102  may be attached to a surface  108  via an attachment mechanism  110 . During use, the dispensing device  104  is positioned adjacent the substrate  102 , and the air treatment material  106  is dispensed onto the substrate  102 . The emanation system  100  is adapted to passively dispense the air treatment material  106  from the substrate  102  when air flows around the substrate. 
         [0034]    The substrate  102  may have a rectangular body  120  with a front surface  122 , a rear surface  124 , upper  126  and lower  128  edges, and opposing side edges  130 . In one embodiment, the substrate  102  has a flat, smooth appearance. The substrate  102  may have various textures and/or surface patterns, such as a rough surface, a smooth surface, a channeled surface, and combinations thereof that may increase surface area and/or the rate of emanation of the air treatment material  106 . Moreover, the substrate  102  may be any shape such as square, triangular, circular, oval, and other shapes. 
         [0035]    As seen more clearly in  FIGS. 2-3H , the substrate  102  may further include a spray pattern or visual guide  132  disposed thereon. The visual guide  132  may be positioned on either the front  122  or rear surface  124  of the substrate  102 , and may be visible through the substrate. In one instance, the visual guide  132  includes a dark circular boundary  134  with a contrasting pattern  136  therein, as compared to the color of the substrate  102 . A secondary pattern  138  is optionally provided in conjunction with the visual guide  132  and may provide an aesthetic quality to the substrate  102 . 
         [0036]    The visual guide  132  may act as a target or non-verbal cue for an individual coating the substrate  102  with the air treatment material  106 , as described in more detail hereinbelow. The visual guide  132  may be only a region of visual contrast from the surrounding substrate  102 , though any pattern or visual device may be used. For example, numerous representative examples of exemplary visual guides  132  are depicted in  FIGS. 3A-3H . 
         [0037]    In some embodiments, the visual guide  132  directs an individual coating the substrate  102  where to spray the air treatment material  106  and provides a secondary meaning. For example, the visual guide  132  depicted in  FIG. 3A  may indicate that the substrate  102  and associated air treatment material  106  are non-toxic and/or environmentally friendly. In other embodiments seen in  FIGS. 3B, 3G , or  3 H, the visual guides  132  may depict images suggesting a time of day (e.g., day or night) to indicate when the substrate  102  and associated air treatment material  106  should be used. 
         [0038]    In other embodiments, the pattern or appearance of the visual guide  132  may be correlated either with a dispensing pattern of the dispensing device  104  or may otherwise indicate a pairing with the dispensing device. With respect to the first concept, the dispensing device  104  may dispense the air treatment material  106  in the same shape as the visual guide  132  disposed on the substrate  102 , such as a circular pattern ( FIG. 3C ), a rectangular pattern ( FIG. 3D ), or a triangular pattern ( FIG. 3E ). Regarding the second concept, the pattern of the visual guide  132  may be indicative of which air treatment material  106  should be used for the particular substrate  102 . For example, a particular substrate  102  may have a characteristic that favors one type of air treatment material  106  compared to another, such as an ideal emanation rate for the air treatment material in question due to the material from which the particular substrate is made. In other words, the visual guide  132  serves to instruct the user which air treatment material  106  should be used with the substrate  102 , and the user matches the pattern of the visual guide to that disposed (not shown) on the dispensing device  104 . 
         [0039]    In further embodiments, contact between the air treatment material  106  and the substrate  102  changes the appearance of the visual guide  132 . For example, in one instance, the visual guide  132  disappears or fades or changes color after contact with the air treatment material  106 . In a different embodiment, the visual guide  132  becomes visible only after contact with the air treatment material  106  and fades over time. In this embodiment, the visual guide  132  may fade as the efficacy of the air treatment material lessens to serve as a visual use up cue. 
         [0040]    As seen in  FIGS. 1, 4, 5, and 7 , the substrate  102  may further include a secondary substrate  140  associated therewith. The secondary substrate  140  may be provided in the form of a rectangular sheet  142  having a front surface  144  and an opposing rear surface  146 . The sheet  142  has an upper edge  148 , a lower edge  150 , and opposing side edges  152 . The secondary substrate  140  is attached to, or is otherwise in communication with the substrate  102 . In particular, the secondary substrate  140  may be positioned such that the rear surface  146  of the secondary substrate  140  is flush with the front surface  122  of the substrate  102 . Further, the lower edge  128  and side edges  130  of the substrate  102  may be aligned with the corresponding lower edge  150  and side edges  152  of the secondary substrate  140 . In other embodiments, the secondary substrate  140  may be larger, smaller, and/or wrap around one or more edges  126 ,  128 ,  130  of the substrate  102 . 
         [0041]    The secondary substrate  140  may be attached to the substrate  102  by an adhesive, a staple, a hook and loop fastener, combinations thereof, and other mechanisms. In one embodiment, the secondary substrate  140  is designed to be adjacent the front surface  122  of the substrate  102  such that there are no gaps between the substrate  102  and the secondary substrate  140 . In another embodiment, the secondary substrate  140  is disposed on the substrate  102  to serve as the visual guide  132 . 
         [0042]    Referring to  FIGS. 4 and 5 , the substrate  102  may have a length dimension L of between about 10 mm to about 800 mm. In some embodiments, the length dimension L of the substrate  102  is between about 100 mm to about 500 mm. In one specific embodiment, the length dimension L of the substrate  102  is about 300 mm. The substrate  102  further may have a width dimension W of between about 10 mm to about 600 mm. In some embodiments, the width dimension W of the substrate  102  is between about 100 mm to about 400 mm. In one specific embodiment, the width dimension W of the substrate  102  is about 210 mm. 
         [0043]    As depicted in  FIG. 5 , the secondary substrate  140  may have a thickness dimension Ts of between about 0.1 mm to about 2 mm. In some embodiments, the thickness dimension Ts of the secondary substrate  140  is between about 0.3 mm to about 1 mm. In one specific embodiment, the thickness dimension T S  of the secondary substrate  140  is about 0.6 mm. In another embodiment, the thickness dimension T S  of the secondary substrate  140  is at least about 0.4 mm. The secondary substrate  140  further may have a length dimension L S  of between about 1 mm to about 100 mm. In some embodiments, the length dimension L S  of the secondary substrate  140  is between about 5 mm to about 100 mm. In one specific embodiment, the length dimension L S  of the secondary substrate  140  is about 25 mm. In another embodiment, the length dimension L S  of the secondary substrate  140  is at least about 20 mm. 
         [0044]    The secondary substrate  140  further may have a width dimension W S  (see  FIG. 4 ) of between about 10 mm to about 600 mm. In some embodiments, the width dimension W S  of the secondary substrate  140  is between about 100 mm to about 400 mm. In one specific embodiment, the width dimension W S  of the secondary substrate  140  is about 210 mm. In one embodiment, the width dimension W of the substrate  102  is substantially the same as the width dimension W S  of the secondary substrate  140 . In one embodiment, the ratio of the length dimension L of the substrate  102  to the length dimension L S  of the secondary substrate  140  is about 14 to about 1. In another embodiment, the ratio of the length dimension L of the substrate  102  to the length dimension L S  of the secondary substrate  140  is about 10 to about 1. In a further embodiment, the ratio of the length dimension L of the substrate  102  to the length dimension L S  of the secondary substrate  140  is about 8 to about 1. 
         [0045]    As seen in  FIG. 6 , the substrate  102  may include a first emanation surface  160  and a second emanation surface  162 . In this embodiment, the first emanation surface  160  and the second emanation surface  162  are integral, or otherwise in fixed communication with each other to form the substrate  102 . The first and second emanation surfaces  160 ,  162  may be integral, in that, the substrate  102  is provided as a single sheet with a portion of the sheet having a different volatile material release profile from other portions of the sheet. In this embodiment, the substrate  102  includes a substantially uninterrupted front surface  164 . Although the second emanation surface  162  is depicted as an elongate rectangular structure, the second emanation surface  162  may include other shapes and/or sizes and/or may be oriented or positioned in other portions of the substrate  102 . 
         [0046]    A demarcation between the substrate  102  and the secondary substrate  140 , or the first and second emanation surfaces  160 ,  162 , may not be readily apparent unless another mechanism (e.g., visual cue) is used to alert the user. For example, the second emanation surface  162  may be imparted with a pattern  166  or design, while the first emanation surface  160  may not include the pattern or design. In other embodiments, the first and second emanation surfaces  160 ,  162  may be contrasted using patterns, colors, and/or other visual markers. In a further embodiment, the first and second emanation surfaces  160 ,  162  are not visually distinct with respect to each other. Likewise, the substrate  102  and/or secondary substrate  140  may be provided with one or more visual cues distinguishing one from the other. 
         [0047]    The substrate  102  may be chosen based on the rate of release from the substrate of a composition impregnated therein. For example, the substrate  102  may be chosen to have a release rate such that an effective amount of a pest control agent, such as an insecticide or insect repellant, is released for a specific length of time, such as for about 1 day, or about 2, or about 3, or about 7, or about 14 days. Further, the substrate  102  may also be chosen based on its ability to maximally release a composition held therein, such that at the end of life, a minimal amount of composition is still contained therein. 
         [0048]    The materials and properties used for the substrate  102  and/or the secondary substrate  140  impact the volatile material release rates of each substrate. Therefore, the substrate  102  may include a first volatile material release profile, and the secondary substrate  140  may include a second, different, volatile material release profile. In one embodiment, an active contained within the air treatment material  106  may be designed to be released from the substrate  102  at a rate of about 0.1 mg/hr to about 1 mg/hr. In other embodiments, the active may be released from the substrate  102  at a rate of about 0.1 mg/hr to about 0.3 mg/hr. In a further embodiment, the active may be released from the substrate  102  at a rate of about 0.25 mg/hr. In another embodiment, the active may be released from the substrate  102  at a rate of at least about 0.2 mg/hr. Contemplated effective release rates of the active from the secondary substrate  140  may be from about 0.01 mg/hr to about 1 mg/hr. In other embodiments, the active may be released from the secondary substrate  140  at a rate of about 0.05 mg/hr to about 0.1 mg/hr, or from about 0.05 to about 0.2 mg/hr, or from about 0.1 to about 0.3 mg/hr. In another embodiment, the active may be released from the secondary substrate  140  at a rate of less than about 0.1 mg/hr. In one embodiment, the active may be released from the secondary substrate  140  at a slower rate than the release rate of the active from the substrate  102 . It should be noted that the substrate  102  may be defined by the second volatile material release profile, and the secondary substrate  140  may be defined by the first volatile material release profile. 
         [0049]    Any suitable materials may be used for the substrate  102  and secondary substrate  104 . For example, the substrate  102  may be made of paper, cardboard, paperboard, plastic, and the like, or other materials consistent with the properties described herein. In one embodiment, the substrate  102  may include a natural or synthetic plastic material. For example, in one embodiment, the substrate  102  includes a polymer such as polypropylene, polyethylene, and/or polyethylene terephthalate. In one particular embodiment, the substrate  102  is a polyethylene terephthalate film. 
         [0050]    The secondary substrate  140  may include a material that is rigid enough to minimize any gaps between the secondary substrate and the substrate  102 , while at the same time, porous enough to absorb a quantity of air treatment material  106 . For example, the secondary substrate  140  may be paper, cardboard, paperboard, foam, or the like. The secondary substrate  140  may include cellulosic materials including crepe paper, printer paper, A4 paper, and materials disclosed in WO 2005/046332. Additionally, the substrate  102  and/or the secondary substrate  140  may include combinations of manufactured, natural, and recycled or reclaimed materials. In one specific embodiment, the substrate  102  includes a polymer and the secondary substrate  140  includes cardboard. 
         [0051]    Further, one or more portions of or the entirety of the substrate  102  may be transparent. In addition, one or more portions of or the entirety of the substrate  102  and/or the secondary substrate  140  may be translucent and/or opaque. Further, any combination of transparency, translucency, or opacity may be chosen for the substrate  102  and the secondary substrate  140 . For example, in one embodiment, the substrate  102  is translucent, and the secondary substrate  140  is opaque. In another embodiment, both the substrate  102  and the secondary substrate  140  are transparent. In a further embodiment, the substrate  102  is opaque, and the secondary substrate  140  is translucent. 
         [0052]    The air treatment material  106  may be a fragrance or insecticide disposed within a carrier liquid, a solvent, a deodorizing liquid, and the like. The air treatment material  106  may also include other actives, such as sanitizers, air fresheners, odor eliminators, mold or mildew inhibitors, insect repellents, and the like, or actives that have aromatherapeutic properties. The air treatment material  106  alternatively includes any volatile material known to those skilled in the art. 
         [0053]    The air treatment material  106  may be provided in any dispensable form. In one embodiment, the air treatment material  106  is provided as an emulsion. For example, the air treatment material  106  may be provided as a microemulsion. In one embodiment, the air treatment material  106  may include water, one or more surfactants, an active ingredient, and a fragrance. 
         [0054]    In one embodiment, the air treatment material  106  may include between about 80% to about 98% deionized water, or about 85% to about 94% deionized water, or about 90% deionized water, or an amount of deionized water of at least about 80% of the total of the air treatment material. 
         [0055]    The air treatment material  106  may further include a surfactant and/or a surfactant blend provided in an amount between about 0.1% to about 8%. In one embodiment, the surfactant blend is provided in an amount between about 3% to about 6%. In a different embodiment, the surfactant blend is present in an amount of at least about 4%. In one specific embodiment, a first surfactant is provided in an amount between about 0.1% to about 0.5%, a second surfactant is provided in an amount between about 1.75% to about 2.5%, and a third surfactant is provided in an amount between about 1.75% to about 2.5%. Suitable surfactants include, for example, nonionic, anionic, zwitterionic, and/or cationic surfactants. For example, the first surfactant may be provided by Stepan, Co. under the trade name and number Stepanquat® 1010, and the second surfactant may be provided by Dow Chemical, Co. under the name and number Tergitol™ 15-S-7. The third surfactant may be an ethoxylated castor oil provided by Evonik Industries and sold under the name and number Tagat® CH 60. 
         [0056]    The air treatment material  106  may also include at least one fragrance. The fragrance may be present in an amount of between about 0.5% to about 10%, or about 2% to about 6%, or in an amount at least about 4%. Any fragrance may be used herein including, for example, a floral scent, a fresh scent, a lavender scent, a eucalyptus scent, a pine scent, a spice scent, and combinations thereof. 
         [0057]    An active ingredient may be present in the air treatment material  106  in an amount of between about 0.1% to about 2%, or about 0.2% to about 1%, or in an amount of about 0.4%, or at least about 0.3%. Candidate actives include esbiothrin, tefluthrin, prallethrin, transfluthrin, VAPORTHRIN®, metofluthrin, dimefluthrin, D-teflumethrin, and/or other volatile pyrethroids (with high vapor pressure). An active release rate of at least 0.05 milligrams per hour (mg/hr) or higher is preferred. 
         [0058]    In one specific embodiment, the air treatment material  106  includes about 90.7% (2.7 g) of deionized water, about 0.4% (0.01 g) of the first surfactant, about 2.25% (0.068 g) of the second surfactant, about 2.25% (0.068 g) of the third surfactant, about 4% (0.12 g) of the fragrance, and about 0.4% (0.012 g) of the active ingredient. 
         [0059]    It is contemplated that fragrances may be used as “use up” cues or indicators, such that when a user can no longer smell the fragrance, the strength of the active ingredient is no longer effective for its intended purpose, and the substrate  102  must be “recharged” with another dose of the air treatment material  106 . In one embodiment, the amount of fragrance included in the air treatment material  106  is correlated to the active ingredient included therein. In this way, the fragrance further provides an olfactory cue to the user of the continuing efficacy of the air treatment material  106 . One or more additional use-up cues may be used, such as, for example, appearing and disappearing inks and the like for the visual guide  132  or secondary substrate  140 . 
         [0060]    A methodology for selecting a fragrance and an active to be incorporated into the air treatment material  106  is provided. For example, a fragrance may be selected to be efficacious for a first specified time period, and an active ingredient may be selected to be efficacious for a second specified time period. In one embodiment, the first and second time periods may be substantially equivalent. Numerous factors may be considered when selecting the fragrance and the active ingredient including, for example, the climate, the strength of the sense of smell of the user, the size of the room where the emanation system may be used, the size of the substrate  102 , the amount of air treatment material  106  applied to the substrate, and the like. It should be appreciated that the fragrance can be “keyed” to the active ingredient, or vice versa, to provide the “use-up” cue function. 
         [0061]    In one embodiment, the air treatment material includes about 4% of a fragrance and about 0.4% of the active ingredient (e.g., transfluthrin). Using this formulation, about 3 g of air treatment material  106  may be sprayed onto the substrate  102  to provide both mosquito repellency and a pleasantly fragranced room for a time period of about three days. The air treatment material  106  may be reapplied after the third day to repeat the process. 
         [0062]    The air treatment material  106  may solely include an active, or for ease of handling, the active may be carried in a hydrocarbon, an alcohol, or a lipophilic or a hydrophilic solvent, mixtures thereof, or other solvent. Alternatively, or in addition, the substrate  102  and/or secondary substrate  140  may also hold a fragrance, a deodorizer, or other air treatment material to which the active is applied to create the air treatment material  106  on the substrate. In one embodiment, the substrate  102  and/or secondary substrate  140  may include the fragrance which only becomes noticeable once adequately saturated with an applied air treatment material  106  and thus serves as a saturation cue to indicate an adequate amount of air treatment material has been applied. It is envisioned that such an arrangement may teach the user to apply a specific amount (the same amount when first used to trigger the saturation cue) each subsequent time when the substrate  102  is recharged. 
         [0063]    As shown in  FIGS. 1, 2, and 7 , the substrate  102  is designed to be attached to the surface  108  via the attachment mechanism  110 . The attachment mechanism  110  may include pins or tacks that extend through the substrate  102  in opposing upper corners thereof. In some embodiments, other attachment mechanisms  110  may include electrostatic forces, a hook and loop fastener, a magnet, adhesives, strings, hooks, or the like. In other embodiments, the substrate  102  may be positioned adjacent the surface  108  (e.g., such as a flat surface) without the use of the attachment mechanism  110 . The attachment mechanism  110  preferably allows the substrate  102  to be mounted or hung from a vertical or horizontal surface  108 , such as, for example, a wall. 
         [0064]    As seen in  FIGS. 1 and 7 , a dispensing device  104  may be used to apply the air treatment material  106  to the substrate  102 . One suitable dispensing device  104  includes a container  180  with a sprayer head  182  mounted thereon. The air treatment material  106  is disposed within the container  180 , and the sprayer head  182  acts to seal the air treatment material therein and to provide a dispensing mechanism able to controllably release the air treatment material  106 . The sprayer head  182  generally includes a body  184  with a manually actuated trigger  186  and a nozzle  188  with an outlet orifice (not shown). Although a specific dispensing device  104  is shown in  FIGS. 1 and 7 , other manually or electrically actuated dispensing devices may be used. 
         [0065]    In one embodiment, the nozzle  188  of the sprayer head  182  is designed to emit a desirable spray pattern that is correlated to the visible guide  132  on the substrate  102 . In some embodiments, the sprayer head  182  may be curved or provided with other structure (not shown) having attributes to facilitate spraying. Further, it is anticipated that a conventional trigger sprayer mechanism may be used or a pre-compression pump type spray mechanism. The nozzle  188  of the sprayer head  182  may further include a swirl chamber (not shown) and/or other mechanism that acts to break up and dispense the air treatment material  106  in a desired pattern. 
         [0066]    The sprayer head  182  emits enough air treatment material  106  to contact at least a portion of the substrate  102 . In particular, in some embodiments, the sprayer head  182  emits between about 0.1 cc to about 0.5 cc per pump, and in one specific embodiment emits about 0.3 cc per pump. One suitable sprayer head  182  for use in the emanation system  100  is the Mini-Trigger™ Curve Fine Mist Sprayer manufactured by MeadWestvaco Corporation (Richmond, Va.). 
         [0067]    By coating the substrate  102  with an appropriate air treatment material  106 , air contacting the substrate will acquire a portion of the volatile material (e.g., the active), and release it from the emanation system  100 . The air treatment material  106  may be applied to one or more portions of the substrate  102  and/or the secondary substrate  140  (or the first emanation surface  160  and/or the second emanation surface  162  shown in  FIG. 6 ). 
         [0068]    In one instance, the user may dispense the air treatment material  106  onto the substrate  102 . In this instance, the air treatment material  106  may run, or otherwise flow down the front surface  122  thereof, until it contacts the secondary substrate  140 . After contacting the secondary substrate  140 , the air treatment material  106  may be absorbed by the secondary substrate for the continuing release of the air treatment material into the atmosphere. In this way, the air treatment material  106  is not wasted due to loss from the air treatment material flowing off the substrate  102  after application thereto. 
         [0069]    Application of the air treatment material  106  to the substrate  102  may provide an additional advantage of staged release of the air treatment material. More particularly, a quantity of air treatment material  106  may be released from the substrate  102  in the time period initially following application. Such release provides for faster efficacy of the air treatment material  106 . Additionally, runoff from the air treatment material  106  is absorbed into the secondary substrate  140 . The runoff quantity of air treatment material  106  is initially absorbed, but continues to be released from the secondary substrate  140  over an extended time period. In some embodiments, the positioning of the secondary substrate  140  allows for runoff to be retained and to be continually released over a longer time period, providing for both initial and continuing efficacy. 
         [0070]    Prior to use, the substrate  102  is preferably provided to a user either by itself or via a sealed container or package (not shown). The user may attach the substrate  102  to the surface  108  using the attachment mechanism  110 . At this point, the substrate  102  may not include the air treatment material  106  or may include a portion of it, as described herein elsewhere. As depicted in  FIG. 7 , when the emanation system  100  is to be used, a user grasps the dispensing device  104  and orients the nozzle  188  of the sprayer  162  in substantial alignment with the substrate  102  and/or visual guide  132 , if provided. Once properly oriented, the individual applies inward force to the trigger  186  to manually dispense the air treatment material  106  therefrom. The air treatment material  106  contacts the substrate  102  and coats at least a portion thereof. After the air treatment material  106  is applied to the substrate  102 , at least a portion of the air treatment material may travel downwardly over the front surface  122  of the substrate until contacting the secondary substrate  140 . 
         [0071]    In one particular embodiment, the dispensing device  104  is positioned a distance of not greater than about  60  cm away from the substrate  102 . Once properly oriented, the individual manually dispenses the air treatment material  106  therefrom by pressing the manually actuated trigger  186 . In one specific embodiment, the user applies the air treatment material  106  onto the substrate  102  by pressing the trigger  186  about ten times to impart at least about 5 mg to about 6 mg of active ingredient onto the substrate  102 . 
         [0072]    In one embodiment, the air treatment material  106  is designed to be applied to the substrate  102  over a pre-defined time period. In particular, the air treatment material  106  is designed to be applied to the substrate  102  about every three days. In one embodiment, the time period is about one day. In another embodiment, the time period is between about 1 day and about 7 days. In other embodiments, the air treatment material  106  may be applied by the user as desired. 
         [0073]    In another embodiment, the substrate  102  is provided to an individual&#39;s home for use by another individual. The second individual arrives at the home of the user with the dispensing device  104  and dispenses the air treatment material  106  onto the substrate  102 . The second individual then leaves with the dispensing device  104 . The user may then have the substrate  102  recharged, as needed, using a subscription service to have their substrates coated with the air treatment material  106  by the second individual. For example, the second individual may re-coat the substrate  102  every three days, weekly, bi-weekly, bi-monthly, monthly, or over other set time periods. In a further instance, the second individual may deliver supplies or other items in conjunction with the application of the air treatment material  106 . In a different embodiment, individuals may take their substrates  102  to a central location (e.g., a church, a community center, etc.) to have the substrate coated with the air treatment material  106 . 
         [0074]    Any of the embodiments described herein may be modified to include any of the structures or methodologies disclosed in connection with different embodiments. Further, the present disclosure is not limited to the substrate, the attachment mechanism, and/or the dispensing device of the type specifically shown. Still further, the support for any component of any of the embodiments disclosed herein may be chosen or modified to work with various types of substrates consistent with the disclosure herein. 
       INDUSTRIAL APPLICABILITY 
       [0075]    Numerous modifications to the present invention will be apparent to those skilled in the art in view of the foregoing description. Accordingly, this description is to be construed as illustrative only and is presented for the purpose of enabling those skilled in the art to make and use the invention and to teach the best mode of carrying out same. The exclusive rights to all modifications which come within the scope of the appended claims are reserved.