Bat repellent, aerosol product, method for repelling bats, and method for extending the duration of bat repellent use with l-menthol.

Abstract

To achieve a high repellent effect against bats over a long period of time. [Solution] The bat repellent contains a volatile irritant and a volatilization-inhibiting component.

Description

Technical Field

[0001] The present disclosure relates to a bat repellent for repelling bats, an aerosol product, a method for repelling bats, and a method for extending the duration of bat repellency by l-menthol.

Background Art

[0002] Bats may, for example, inhabit human dwellings. When bats inhabit human dwellings, damages such as noise and dirt and odor caused by feces and urine occur.

[0003] Among the bats inhabiting human dwellings, there are many Japanese pipistrelles. Japanese pipistrelles have a habit of invading and inhabiting gaps such as door pockets. Also, Japanese pipistrelles leave their nests at sunset and fly around in search of food at night, and may stop at the eaves of houses etc. for rest on the way. Damage caused by bat feces and urine also occurs at this time.

[0004] Therefore, there is a demand for products having an effect of preventing bats from inhabiting and staying. In this regard, it is known that repellents containing peppermint oil etc. as an active ingredient are effective against some small animals such as mice (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] By the way, although the mechanism of action is not described in Patent Document 1, it is considered that small animals sense the smell of peppermint oil when peppermint oil volatilizes, and are repelled by the smell of the peppermint oil.

[0007] The inventors of this application have found that certain irritants are effective as repellents against bats. However, these types of components are highly volatile, which presents a challenge as their repellent effect is short-lived.

[0008] Therefore, it was considered to extend the repellent effect by incorporating a component that suppresses volatilization, but in that case, the irritating component would not volatilize easily, and it was expected that the odor that bats would perceive would also decrease. In other words, if a component that suppresses the volatilization of the repellent component was incorporated, there was a possibility that the repellent effect on bats would not be fully exerted.

[0009] This disclosure is made in view of the above points, and its purpose is to obtain a high repellent effect against bats over a long period of time. [Means for solving the problem]

[0010] Through diligent research, the inventors of the present invention discovered, to their surprise, that even when a component that suppresses the volatilization of the repellent component is incorporated, sufficient repellent effect against bats can be achieved, and that this repellent effect can be sustained, thus completing the present invention.

[0011] In other words, one aspect of this disclosure is based on a bat repellent for deterring bats, and contains a volatile irritant and a volatilization-inhibiting component.

[0012] This bat repellent is applied, for example, to ceilings and crevices. Despite containing volatility-inhibiting components, the bat repellent effect from the volatile irritants is fully realized. This is thought to be because the repellent effect is not due to the bats sensing a scent from the volatilizing components, but rather to the irritation they experience upon contact with the volatile irritants applied to the ceilings and crevices.

[0013] The volatile irritant may contain at least one of the following: peppermint oil, chili pepper extract, wasabi oil, l-menthol, capsaicin, allyl isothiocyanate, or methyl salicylate. The volatile irritant may be l-menthol, for example. Although l-menthol is highly effective in repelling bats, its high volatility means that its effect is not long-lasting. Therefore, by incorporating a volatility-inhibiting component, the volatilization of l-menthol can be suppressed, increasing its long-lasting effect while still providing a repellent effect.

[0014] The volatile irritant may be, for example, butyl stearate. That is, butyl stearate can suitably suppress the volatilization of the volatile irritant. The volatile irritant may include l-menthol and butyl stearate.

[0015] In another aspect of this disclosure, the bat repellent may be an aerosol product in which a bat repellent containing a volatile irritant and a volatilization inhibitor is contained together with a propellant in an aerosol container. Because the bat repellent is contained in an aerosol container, it can be easily applied to, for example, ceilings or crevices.

[0016] In yet another aspect of this disclosure, there may be a method for repelling Japanese house bats, which involves applying a bat repellent containing a volatile irritant and a volatilization inhibitor to the surface of the bat's resting place. That is, Japanese house bats are bats that invade human dwellings and have a habit of clinging tightly to ceilings and other surfaces using their forelegs and hind legs. Therefore, by applying the bat repellent according to this disclosure to the ceiling or other surface, the ceiling and the body of the Japanese house bat resting there come into contact over a wide area. Consequently, a high repellent effect against Japanese house bats can be obtained through contact stimulation by the volatile irritant.

[0017] The present disclosure also includes a method for extending the duration of bat repellency by l-menthol, which uses butyl stearate as an active ingredient. That is, the volatility of l-menthol can be suppressed by butyl stearate, and the duration of repellency can be extended. As a result, a sufficient bat repelling effect can be obtained.

Effects of the Invention

[0018] As described above, a high repelling effect against bats can be obtained over a long period.

Brief Description of the Drawings

[0019] [Figure 1] FIG. 1 is a perspective view of an aerosol product according to an embodiment of the present invention.

Modes for Carrying Out the Invention

[0020] Hereinafter, embodiments of the present invention will be described in detail based on the drawings. It should be noted that the following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the present invention, its applications, or its uses.

[0021] The bat repellent according to an embodiment of the present invention contains at least a volatile stimulant component and a volatility suppressing component. The volatile stimulant component contains, for example, at least one of peppermint oil, capsicum extract, wasabi oil, l-menthol, capsaicin, allyl isothiocyanate, and methyl salicylate, or any plurality thereof. The volatile stimulant component is considered to be a component that exhibits a repelling effect upon contact with the body of a bat, and it is considered that any component that acts on the sensory receptors of the skin will similarly exhibit a repelling effect, in addition to the above. Further, the volatile stimulant component may be mixed with a known bat repellent component.

[0022] The volatility-inhibiting component is a component that inhibits the volatility of the volatile stimulating component. As the volatility-inhibiting component, a component that is compatible with the volatile stimulating component and has a lower vapor pressure than the volatile stimulating component can be used. Examples of such components include esters of fatty acids and alcohols. As such esters, a carbon number range of 10 to 35 is preferable, the fatty acid part is preferably a straight-chain and saturated fatty acid, and the alcohol part is preferably a straight-chain and saturated alcohol. Examples of such components include butyl stearate. Other than butyl stearate can also be used as the volatility-inhibiting component, and examples include liquid paraffin, acrylic resin, waxes, paraffins, alcohols, and the like. The volatility-inhibiting component can also be used by mixing one or more kinds. Since butyl stearate can inhibit the volatility of l-menthol and extend the duration of repellency, a method for extending the duration of bat repellency by l-menthol can be implemented by attaching an agent containing l-menthol to an object with butyl stearate as an active ingredient.

[0023] Bat repellents may contain, for example, a solvent. Examples of solvents include alcohols, hydrocarbon solvents, ester solvents, glycol solvents, fluorine solvents, and water. Only one of these may be used as a solvent, or two or more may be mixed together. Examples of alcohols include ethanol, propanol, and isopropanol. Only one of these may be used as a solvent, or two or more may be mixed together. Examples of hydrocarbon solvents include paraffin, isoparaffin, and kerosene. Only one of these may be used as a solvent, or two or more may be mixed together. Examples of ester solvents include isopropyl myristate. Examples of glycol solvents include propylene glycol monomethyl ether (PGME). Examples of fluorine solvents include hydrofluoroolefin (HFO). Examples of water include tap water, deionized water, and purified water. Only one of these may be used as a solvent, or two or more may be mixed together. Note that when using water as a solvent, it will not dissolve on its own, so it must contain alcohols or be emulsified or solubilized with a surfactant.

[0024] Bat repellents may contain, for example, surfactants. Examples of surfactants include anionic surfactants, nonionic surfactants, amphoteric surfactants, etc. Only one of these may be included, or two or more may be mixed and included.

[0025] Bat repellents may contain other ingredients. Examples of other ingredients include insecticides, antibacterial and preservative ingredients, deodorizers, pH adjusters, fragrances, dyes, repellent effect enhancers, UV absorbers, and antioxidants. Only one of these may be included, or two or more may be included in any combination.

[0026] Since bats are covered in feces, it is likely that many fecal-derived bacteria adhere to their body surface. Therefore, disinfection of areas where bats have entered is considered necessary.

[0027] Identification of bacteria present in the feces of the Japanese house bat revealed the presence of Acerihabitance arboris, Microbacterium sp, and others. Examples of antibacterial components include isopropylmethylphenol (IPMP) and grapefruit seed extract.

[0028] The concentration of volatile irritants (w / v% of the total liquid) is specified to be between 0.1 and 30. The concentration of volatility-inhibiting components (w / v% of the total liquid) is specified to be between 0.01 and 10.

[0029] Examples of bats that can be repelled by bat repellents include the Japanese house bat, the greater horseshoe bat, the Kagura bat, and the long-tailed bat. Bat repellents are particularly effective against the Japanese house bat and the greater horseshoe bat.

[0030] Places where bat repellents can be used include, for example, attics, ceiling spaces, under floors, under eaves, storage rooms, warehouses, barns, closets, garages (parking lots, bicycle parking areas), entrances, kitchens, living rooms, bathrooms, toilets, bedrooms, gardens, garbage areas, holes in the walls of living rooms and corridors, gaps created by electrical appliances such as refrigerators and furniture (gaps between furniture, gaps between furniture and electrical appliances, gaps between furniture and walls, gaps between electrical appliances and walls), and ventilation holes.

[0031] Figure 1 shows an aerosol product 1 according to an embodiment of the present invention. Since this aerosol product 1 is a product for repelling bats, it can also be called a bat repellent aerosol product 1. The bat repellent aerosol product 1 consists of a bat repellent contained together with a propellant as contents in an aerosol container 2, and comprises this aerosol container 2, a cap 3, a spray button 4, and a nozzle 5.

[0032] Aerosol product 1 is used in bat repellent methods. Examples of propellants that can be used in aerosol product 1 include liquefied petroleum gas (LPG), dimethyl ether (DME), compressed gases (carbon dioxide, nitrogen, nitrous oxide), etc. Of these, only one of any choice may be included as a propellant, or a mixture of two or more of any choice may be included as a propellant.

[0033] The aerosol container 2 is made of a pressure-resistant container and is equipped with a valve mechanism and a tip (not shown) at the top. The valve mechanism is operated by a spray button 4 and is configured to continuously spray the contents of the aerosol container 2 while the spray button 4 is pressed. The valve mechanism may be a metered-discharge type, and may be configured as a metered-discharge valve mechanism that sprays a fixed amount of the contents of the aerosol container 2 and stops when operated once by the spray button 4. The fixed amount can be, for example, in the range of 0.1 mL to 3.0 mL. Alternatively, the aerosol container 2 may be a full-discharge type aerosol container in which the entire contents of the aerosol container 2 are sprayed in a single spray operation.

[0034] The cap 3 is a component attached to the top of the aerosol container 2. The nozzle 5 is integrated with the spray button 4 and is formed in a cylindrical or tubular shape to spray the contents that are ejected from the aerosol container 2 via a valve mechanism. A spray port 5a is opened at the tip of the nozzle 5. The structure and shape of the aerosol container 2, cap 3, spray button 4, and nozzle 5 are examples, and structures and shapes other than those shown can be used. For example, the number of spray ports 5a may be one or two or more. If two or more spray ports 5a are provided, the multiple spray ports 5a may be arranged vertically, horizontally, or in a matrix shape when viewed from the front.

[0035] The minimum inner diameter of nozzle 5 is, for example, 0.6 mm or more, preferably 0.9 mm or more. The maximum inner diameter of nozzle 5 is, for example, 1.8 mm or less, preferably 1.5 mm or less. Considering that nozzle 5 also sprays into gaps, a long nozzle is preferable. The nozzle length is, for example, preferably 5 mm or more and 20 mm or less.

[0036] The lower limit of the injection volume per second is, for example, 1 mL or more, preferably 4.0 mL or more. The upper limit of the injection volume per second is, for example, 10.0 mL or less, preferably 8.0 mL or less.

[0037] When the aerosol container 2 is a metered-discharge type, the lower limit of the amount dispensed per spray is 0.1 mL or more, preferably 0.5 mL or more. When the aerosol container 2 is a metered-discharge type, the upper limit of the amount dispensed per spray is 3.0 mL or less, preferably 2.0 mL or less.

[0038] The number of sprays from the aerosol container 2 of the bat repellent may be one or multiple times. The bat repellent may be sprayed multiple times from the aerosol container 2 in a single treatment, in which case the bat repellent may be sprayed intermittently with time intervals between sprays. The time interval may be, for example, 10 hours or more, or 20 hours or more. Alternatively, the above time interval may be 40 hours or less, or 50 hours or less. By repeatedly spraying the bat repellent with time intervals between sprays, bats can learn that the active ingredients in the bat repellent have an unpleasant smell, and that the propellants and solvents that adhere to their bodies are unpleasant, thereby preventing bats from settling in the area.

[0039] The average particle size (D50) of the bat repellent sprayed from aerosol container 2 is specified to be 35 μm or larger at a distance of 50 cm from the nozzle 5a in the direction of spraying. Furthermore, the average particle size (D50) of the bat repellent sprayed from aerosol container 2 is specified to be 65 μm or smaller at a distance of 50 cm from the nozzle 5a in the direction of spraying.

[0040] Here, we will explain the method for measuring the average particle size of the bat repellent sprayed from aerosol container 2. Although not shown in the diagram, the bat repellent is sprayed from a position where the distance between the laser beam, which is irradiated from the laser beam irradiation unit of the particle size measuring instrument to the light receiving unit, and the spray nozzle 50a is 50 cm, so that the bat repellent passes through the laser beam in a direction perpendicular to the direction of irradiation. Measurements are taken while the bat repellent is being sprayed, and the average particle size (D50) can be determined by analyzing the particle size distribution of the bat repellent using an automatic calculation processing unit. This method is well known. The measuring instrument is the LDSA-SPR-1500A manufactured by Microtrac-Bell Co., Ltd.

[0041] When the volume ratio of bat repellent (undiluted solution) to propellant (gas) contained in aerosol container 2 is defined as the liquid-gas ratio (liquid / gas), the range of the liquid-gas ratio is said to be 30 / 70 to 70 / 30, with a range of 40 / 60 to 70 / 30 being preferred. Increasing the volume ratio of the undiluted solution improves the applicability.

[0042] When spraying the bat repellent from the aerosol container 2, it adheres to the surface of the bat's settlement. By pointing the nozzle 5 towards the surface of the bat's settlement and then spraying the bat repellent from the aerosol container 2, the bat repellent can be reliably adhered to the surface of the bat's settlement. By adhering the bat repellent to the surface of the bat's settlement, the settlement of bats in and around the settlement can be suppressed. This method is a method for repelling bats. The place where the bat repellent is applied is the same place where the bat repellent is used as described above.

[0043] When spraying bat repellent from aerosol container 2, it may be sprayed into the air or onto an object. The direction of spraying the bat repellent may be upward, downward, or horizontal. Furthermore, the bat repellent may be sprayed upright or inverted. In addition, the aerosol container 2 may be tilted diagonally or directly to the side when spraying.

[0044] When spraying bat repellent indoors, the size of the space can be 40 tatami mats or less, and preferably between 10 and 25 tatami mats. In this disclosure, 1 tatami mat is defined as 1.8 m². 2 This is how it is defined. Furthermore, the size of the space can be, for example, 176m. 3 It can be as follows: 44m 3 More than 110m 3 The following is preferable. A bat repellent method is also possible in which a bat repellent containing a volatile irritant and a volatilization-inhibiting component is dispersed into the air using a bat repellent aerosol product 1. The bat repellent may be sprayed into an open space or into a closed space.

[0045] By making the bat repellent liquid, it can be sprayed not only as an aerosol but also using mechanisms such as hand sprayers and trigger sprayers. In other words, when the bat repellent is contained in a container, the user can operate the hand sprayer or trigger sprayer attached to the container to spray the repellent over a wide area. This also makes it possible to volatilize the bat repellent into the air or adhere it to the surface of the bat's resting place.

[0046] Alternatively, the liquid bat repellent can be contained in a container and sprayed from a spray nozzle attached to the container. The spray nozzle may be, for example, a shower nozzle with multiple outlets. The bat repellent may also be sprayed using a sprayer equipped with a pump that pressurizes the container containing the bat repellent. Alternatively, the bat repellent may be sprayed using a sprayer equipped with an electric pump. The liquid bat repellent can also be made into a concentrated solution. In the case of a concentrated solution, it can be diluted with water, for example, before spraying or dispensing. The dilution ratio can be set arbitrarily. The dilution ratio may be, for example, 2 times or more, but is not limited to this.

[0047] Although not shown in the diagram, a bat repellent device can also be constructed using a bat repellent. The bat repellent device comprises a carrier on which a bat repellent containing a volatile irritant and a volatilization-inhibiting component is volatilized. By using the bat repellent device, it becomes possible to volatilize the bat repellent containing the volatile irritant and volatilization-inhibiting component into the air or to adhere it to the surface of a bat's resting place. The bat repellent device can be installed indoors or outdoors, for example.

[0048] The bat repellent device may be of the natural evaporation type, the forced-air evaporation type, or the heated evaporation type. The bat repellent device may include a container that houses a carrier holding the bat repellent. The container has vents, and the bat repellent held in the carrier is dispersed to the outside of the container by the entry and exit of air through these vents. The carrier may be replaceable.

[0049] Natural evaporation type bat repellent devices have a liquid containing a bat repellent supported on a carrier, and the bat repellent volatilizes from the carrier over time at room temperature. The bat repellent can be volatilized by utilizing natural convection of air or natural wind. Examples of carriers for natural evaporation type bat repellent devices include solid carriers such as plastics, cellulose substrates, nonwoven fabrics, synthetic fibers, foam materials, and mesh. The carrier may also be an impregnated body containing the bat repellent. In addition, multiple solid carriers can be used in combination.

[0050] Furthermore, the bat repellent solution can be made into a gel, jelly, or paste using a gelling agent. In this case, the gelling agent serves as the carrier. Examples of gelling agents include superabsorbent resins (acrylic acid polymers), agar, and pectin. Only one of these may be included as the gelling agent, or a mixture of two or more may be included as the gelling agent. Alternatively, the bat repellent in gel, jelly, or paste form may be supported on a solid carrier or applied to the above-mentioned application site.

[0051] A fan-operated evaporative bat repellent device has a carrier, similar to that of a natural evaporative bat repellent device, and a fan that blows air onto the carrier. The fan may be powered by electricity supplied from, for example, a primary or secondary battery, or it may be powered by electricity supplied from a commercial power source. The fan has a motor and a fan that is rotated by the motor. The rotating fan creates an airflow toward the carrier, causing the air to hit the carrier, and as a result, the bat repellent volatilized from the carrier is carried by the airflow and diffused over a wide area.

[0052] The carrier described above can be placed in a container and used as a bat repellent, for example, by placing it on the floor, or by attaching a hook or the like to the container and suspending it. The carrier can also be in sheet form, or it can be made attachable using an adhesive or glue.

[0053] A heated vaporization type bat repellent device has a carrier, similar to that of a natural vaporization type bat repellent device, and a heating unit for heating the carrier. The heating unit may consist of, for example, an electric heater that generates heat when power is supplied. By heating the carrier to a temperature higher than room temperature using the heating unit, the volatility of the bat repellent is improved, and the bat repellent is dispersed over a wider area. The bat repellent can also be diffused into the air in the form of, for example, a fumigant, smoke bomb, etc. A bat repellent device can also be equipped with both the heating unit and the blower.

[0054] The bat repellent can also be in the form of a powder or granules supported on a solid carrier such as silicon dioxide. By scattering the powder or granules, the bat repellent can be dispersed into the air. Using the above powder or granules makes it possible to implement repellent methods that involve dispersing the bat repellent into the air or adhering it to the application site. The powder or granules can also be used by storing them in a container with ventilation holes or a breathable bag.

[0055] The bat repellent can also be made into bat repellent tablets containing a bat repellent. The bat repellent can be supported on a solid carrier such as silicon dioxide, and the resulting powder or granules can be molded into tablets using a pressure molding machine, tablet press, etc. The shape of the tablets is not particularly limited and can be, for example, plate-shaped, columnar, conical, frustoconical, spherical, or granular. The tablets thus obtained may also be used by scattering them. By using the above tablets, it becomes possible to carry out bat repellent methods that involve volatilizing the bat repellent into the air or adhering it to the application site. The bat repellent tablets can also be used by storing them in a container with ventilation holes or a breathable bag. The powder or granules may be used in combination with the bat repellent tablets. The powder or granules may be blown with the above-mentioned blower, or the powder or granules may be heated in the above-mentioned heating section. [Examples]

[0056] The present invention will be further described below with reference to examples and comparative examples, but the present invention is not limited to these examples.

[0057] The formulations of the examples and comparative examples (test agents) are shown in Tables 1 and 2.

[0058] [Table 1]

[0059] [Table 2]

[0060] (Sustained Effect Improvement Test) A filter paper with a diameter of 90 mm was prepared, and 0.5 mL of the test agent was applied evenly to the filter paper. The filter paper with the test agent applied was left outdoors, away from direct sunlight.

[0061] The amount of l-menthol remaining on the filter paper immediately after application of the test agent, and 3, 6, 8, and 24 hours after application, was quantitatively analyzed by gas chromatography.

[0062] The results are shown in Table 3. Compared to the comparative example, the example showed a higher residual amount of l-menthol even 6 hours after application.

[0063] [Table 3]

[0064] (Test to confirm effectiveness in preventing resident settlement) Test animal: Japanese house bat Test materials: Examples 3-4 First, a 20cm x 10cm piece of plywood was prepared. The test agent contained in the aerosol container was sprayed onto this plywood from a distance of 50cm for 0.5 seconds. After drying the plywood for 1 hour or 24 hours, it was placed against the inner top surface of a 30cm x 30cm x 30cm metal mesh cage, leaving a 1cm gap from the inner top surface.

[0065] Five test animals were placed in a mesh cage, and after one hour, the number of bats that had settled in the gap between the inner top surface of the mesh cage and the plywood was counted, and the repellency rate (%) was calculated using the following formula.

[0066] Repellency rate (%) = (Number of insects settled in crevices / Total number of insects) × 100

[0067] The test results are shown in Table 4. Example 3 showed a repellency rate of over 80% even 24 hours after the test agent was sprayed.

[0068] [Table 4]

[0069] (Test to confirm effectiveness in preventing stagnation) Field test Test animal: Japanese house bat Test material: Example 3 Location: Entrance to a detached house in Otake City, Hiroshima Prefecture In this residence, one or two wild bats were flying to the entrance almost every night, causing damage from their droppings. Although commercially available bat repellent sprays were being used, they were not very effective. In the residence suffering from bat damage, preventative treatment was applied to the areas where bats were flying, following the usage instructions for the test agent.

[0070] The number of droppings was recorded, and the effectiveness of reducing damage from droppings was evaluated.

[0071] Damage prevention rate (%) = 1 - (Number of feces in treated area / Number of feces in untreated area) × 100

[0072] The results are shown in Table 5. Treatment with the test agent according to the example reduced the number of bat droppings, thereby mitigating damage caused by droppings. It is believed that the test agent according to the example prevented damage from droppings because it contains a volatility-inhibiting component, which sustains its effectiveness throughout the night.

[0073] [Table 5]

[0074] (Eviction Effect Test 1) Test animal: Japanese house bat Test material: Example 3 Temperature 25.0℃, humidity 43% A bat was placed in a pipe that was 1 meter long, 3 cm in diameter, and had a rectangular gap of 1 meter x 1 cm at the bottom, and allowed to settle inside for one hour. The test agent was sprayed from the gap in the center of the pipe for about 0.5 seconds, and then it was checked whether the bat was driven out of the pipe. Using the test agent according to the example, it was possible to drive the bat out of the pipe.

[0075] (Eviction Effect Test 2) Test animal: Japanese house bat Test material: Example 3 Location: Ventilation holes in an apartment building in Suita City, Osaka Prefecture Temperature 34.3℃, humidity 50% A bat was visually confirmed to be hiding in a ventilation hole (approximately 150 mm in diameter) of an apartment building, and the test agent according to the example was sprayed five times. By using the test agent according to the example, the bat was able to be driven out of the ventilation hole.

[0076] (Disinfection test) Test material: Example 3, untreated group Feces were collected from wild-caught Japanese house bats and placed in a plastic cup. The test agent was sprayed from an aerosol container onto the feces from a distance of 50 cm, covering a 30 cm x 30 cm area for 2 seconds. The feces were then briefly placed on an SCDLP agar plate in a petri dish to allow the bacteria to adhere to the medium. 100 μL of physiological saline was added to homogenize the bacteria on the medium. The cultures were incubated at 28°C, and colonies were obtained after 2 days. The number of colonies in each petri dish was then counted.

[0077] Disinfection rate (%) = 1 - (Number of colonies in treated area / Number of colonies in untreated area) × 100

[0078] The results are shown in Tables 6 and 7. Example 3, which contained isopropylmethylphenol, demonstrated a high rate of sterilization against bat-derived bacteria.

[0079] [Table 6]

[0080] [Table 7]

[0081] (Irritation confirmation test) Monitor test Test materials: Example 3, Comparative Example 7 Location: 8-tatami mat room with no airflow and constant temperature Temperature 25.0℃, humidity 43% The test agent was dispensed from an aerosol container tilted 45° upwards relative to the horizontal plane for 2 seconds, and then from the ceiling (1m). 2 The spray was directed towards the specified area. One minute after the spraying stopped, three subjects were asked to report whether they experienced any irritation.

[0082] The results are shown in Table 8. The test agents used in the examples were less irritating. This is thought to be because the examples had an appropriate particle size and spray force, and were designed to minimize bounce when sprayed onto the ceiling. The irritation score was on a 5-point scale, with 1 being "no irritation," 2 being "slightly irritating," 3 being "mildly irritating," 4 being "irritating," and 5 being "strongly irritating."

[0083] [Table 8]

[0084] (Test to confirm the reach of spray into gaps) Test material: Example 3 Prepare a PVC pipe that is 8 meters long and 3 cm in diameter. Test paper was placed inside the PVC pipe, ensuring it was in close contact with the inner surface. The test paper was placed at distances of 2 meters, 4 meters, 6 meters, and 8 meters from one end of the pipe.

[0085] The test agent contained in the aerosol container was sprayed upside down from one end of the pipe for 8 seconds. The amount (g) of active ingredient adhering to each test paper was calculated from the weight difference before and after spraying.

[0086] Amount of active ingredient attached (g) = Amount attached (g) × Concentration of active ingredient in the undiluted solution (w / w%)

[0087] As shown in Table 9, the bat repellent reached a distance of 8 meters.

[0088] [Table 9]

[0089] The embodiments described above are merely illustrative in all respects and should not be interpreted restrictively. Furthermore, any modifications or changes that fall within the equivalent scope of the claims are all within the scope of the present invention. Similar repellent effects can be obtained not only with l-menthol, but also when other volatile irritants such as peppermint oil, chili pepper extract, wasabi oil, capsaicin, allyl isothiocyanate, and methyl salicylate are used. [Industrial applicability]

[0090] As described above, the bat repellent, aerosol product, bat repellent method, and l-menthol bat repellent duration extension method related to this disclosure can be used, for example, in places where bats are likely to settle. [Explanation of symbols]

[0091] 1. Aerosol Products 2 Aerosol container 3 caps 4. Spray button 5 nozzles

Claims

1. A bat repellent characterized by containing a volatile irritant and a volatilization-inhibiting component.

2. In the bat repellent according to claim 1, The volatile irritant component is a bat repellent containing at least one of peppermint oil, chili pepper extract, wasabi oil, l-menthol, capsaicin, allyl isothiocyanate, and methyl salicylate.

3. In the bat repellent according to claim 2, The aforementioned volatile irritant is a bat repellent containing l-menthol.

4. In the bat repellent according to claim 1, The aforementioned volatile-inhibiting component is butyl stearate, in a bat repellent.

5. An aerosol product containing a bat repellent with volatile irritants and volatilization inhibitors, along with a propellant, in an aerosol container.

6. A method for repelling Japanese house bats, which involves applying a bat repellent containing a volatile irritant and a volatilization inhibitor to the surface of the bat's settlement area.

7. A method for extending the duration of bat repellent activity using l-menthol, with butyl stearate as the active ingredient.

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