Spray product for controlling small flies and method for preventing the occurrence of small flies

Abstract

To provide a spray product for extinct pest control capable of achieving extinct pest control for a long term.SOLUTION: There is provided a spray product for extinct pest control comprising: a container in which an aerosol agent including a chemical liquid and propellant is sealed; and an injection nozzle for injecting the aerosol agent from the container, for preventing generation of extinct on an injection object. In the aerosol agent sealed in the container, a blend ratio of the chemical liquid and the propellant is adjusted to become 9:91 to 50:50. The injection nozzle has an injection port whose diameter is 0.2-1.0 mm.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a spray product for controlling small flies, which is provided with a container for enclosing an aerosol agent containing a medicinal liquid and a propellant, and a spray nozzle for spraying the aerosol agent from the container, and a method for preventing the occurrence of small flies using the same. [Background technology]

[0002] In recent years, with the popularity of gardening and insect rearing, and the increased awareness of pest control among consumers, small flies have attracted widespread attention as pests commonly found indoors, and have become a problem because they cause discomfort to people. Representative species of small flies found in ordinary households include fruit flies and flea flies that occur around food waste and food, and Sciaridae that occur around indoor ornamental plants and balcony planters, and are the second most common pests to be controlled in ordinary households after mosquitoes. For this reason, there is an increasing demand for controlling small flies using spray products that are easy to operate.

[0003] For example, there is a spray for controlling small flies that uses natural pyrethrin as an insecticidal ingredient (see, for example, Patent Document 1). The product in Patent Document 1 uses natural pyrethrin, which is highly safe for humans and animals, considering indoor use, and can exert a rapid control effect against small flies.

[0004] There is also an aerosol product for controlling small flies that has a spray force set to 2 to 15 gf / 15 cm (see, for example, Patent Document 2). The product in Patent Document 2 is set to the above spray force, so that when sprayed on small flies, the liquid medicine can be applied efficiently to the insect bodies without blowing the flies away with the force of the spray. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2011-251922 A [Patent Document 2] JP 2012-116774 A Summary of the Invention [Problem to be solved by the invention]

[0006] The products of Patent Documents 1 and 2 are intended to directly kill small flies that fly in from outdoors. However, small flies can lay eggs about 10 days to 2 weeks after hatching, and garbage bins (hereinafter referred to as "waste containers") for storing waste such as food waste installed in kitchens and the like are likely to be a source of infestation, so it is difficult to control small flies over a long period of time by simply directly killing small flies that fly in from outdoors.

[0007] The present invention has been made in consideration of the above problems, and aims to provide a spray product for controlling small flies that can control small flies for a long period of time, and a method for preventing the occurrence of small flies. [Means for solving the problem]

[0008] The characteristic configuration of the spray product for controlling small flies according to the present invention to solve the above problems is as follows: A container for enclosing an aerosol agent containing a medicinal solution and a propellant; a spray nozzle for spraying the aerosol agent from the container; A spray product for controlling small flies, comprising: It is used to prevent the occurrence of small flies in the object to be sprayed.

[0009] According to the spray product for controlling small flies having the above-described configuration, the occurrence of small flies is prevented on the object to be sprayed, and the spray product is easy to operate, so that small flies can be controlled for a long period of time.

[0010] In the spray product for controlling small flies according to the present invention, In the aerosol agent filled in the container, the blending ratio of the drug solution to the propellant is preferably adjusted to 9:91 to 50:50.

[0011] With this type of spray product for controlling fruit flies, by adjusting the mixing ratio of the chemical solution and the propellant within the above range, spray particles are formed that are easy to adhere to the object to be sprayed on and, after adhesion, are large enough to sufficiently suppress the volatilization of the pest control components of the chemical solution, making it possible to prevent the occurrence of fruit flies for a long period of time on the object to which the spray particles adhere.

[0012] In the spray product for controlling small flies according to the present invention, The injection nozzle preferably has an injection port with a diameter of 0.2 to 1.0 mm.

[0013] According to the spray product for controlling fruit flies of this configuration, by having a nozzle with a diameter within the above-mentioned range, an appropriate spray pattern can be obtained and the product can easily adhere to the object to be sprayed, thereby effectively preventing the occurrence of fruit flies on the object to be sprayed.

[0014] In the spray product for controlling small flies according to the present invention, It is preferable that the particle diameter of the spray particles sprayed from the spray nozzle is set so that the 50% particle diameter (D50) in a volume cumulative distribution at 25° C. and a spray distance of 15 cm is in the range of 10 to 45 μm.

[0015] According to the present spray product for controlling fruit flies, the D50 particle size of the spray particles is configured to be within the above-mentioned range. Therefore, when the spray target is a waste container containing food waste or other waste, the spray particles will diffuse and adhere not only to the inside surface of the waste container, but also to the gaps between the waste that is piled up three-dimensionally and bulkily, thereby effectively preventing the occurrence of fruit flies.

[0016] In the spray product for controlling small flies according to the present invention, The aerosol preferably contains at least one pyrethroid insecticidal component selected from the group consisting of transfluthrin, profluthrin, and metofluthrin.

[0017] According to the spray product for controlling small flies having the above-mentioned configuration, by using the pyrethroid insecticidal component, the insecticidal component volatilizes sufficiently even at room temperature, and the occurrence of small flies can be effectively prevented.

[0018] In the spray product for controlling small flies according to the present invention, The pyrethroid insecticidal component is preferably contained at 1.0 to 7.0 w / v %.

[0019] According to the spray product for controlling small flies having the above-mentioned composition, by containing the pyrethroid insecticidal component in the above-mentioned range, it is possible to prevent the occurrence of small flies even with a small amount of spray.

[0020] The characteristic configuration of the method for preventing the occurrence of small flies according to the present invention for solving the above problems is as follows: A method for preventing the infestation of small flies in a waste container for containing waste, comprising: a step of spraying an aerosol agent containing a medicinal liquid and a propellant into the waste container; placing the waste material into the waste material container; The purpose of this study is to encompass the above.

[0021] According to the method for preventing the occurrence of small flies, the spraying step of spraying an aerosol agent containing a chemical solution and a propellant into the inside of a waste container can be carried out, so that the sprayed particles can be attached to the inside surface of the waste container. Small flies that fly in after waste is put into the waste container wander around the inside surface of the waste container and come into contact with the sprayed particles attached thereto, so that the effect of the pest control component of the chemical solution prevents the small flies from laying eggs. Even if eggs are laid, subsequent hatching is inhibited, or the hatched larvae wander around the inside surface of the waste container and come into contact with the sprayed particles attached thereto, so that their growth is inhibited.

[0022] The characteristic configuration of the method for preventing the occurrence of small flies according to the present invention for solving the above problems is as follows: A method for preventing the infestation of small flies in a waste container for containing waste, comprising: a spraying step of spraying an aerosol agent containing a medicinal liquid and a propellant onto the waste; placing the waste material into the waste material container; The purpose of this study is to encompass the above.

[0023] According to the method for preventing the occurrence of gnats, the spraying step of spraying an aerosol agent containing a chemical solution and a propellant on waste material is carried out, so that spray particles can be attached to the surface or gaps of the waste material. After the waste material is put into the waste material container, the gnats that fly in wander around the surface of the waste material or enter the gaps in the waste material, thereby coming into contact with the spray particles that have been attached, and the effect of the pest control component of the chemical solution prevents the gnats from laying eggs. Even if eggs are laid, their subsequent hatching is inhibited, or the hatched larvae wander around the surface of the waste material or enter the gaps in the waste material, thereby coming into contact with the spray particles that have been attached, thereby preventing their growth.

[0024] The characteristic configuration of the method for preventing the occurrence of small flies according to the present invention for solving the above problems is as follows: A method for preventing the infestation of small flies in a waste container for containing waste, comprising: A step of placing the waste inside the waste container; a spraying step of spraying an aerosol agent containing a medicinal liquid and a propellant into the waste container containing the waste; The purpose of this study is to encompass the above.

[0025] According to the method for preventing the occurrence of gnats, the spraying step of spraying an aerosol agent containing a chemical solution and a propellant into the inside of a waste container containing waste can be carried out, so that the spray particles can be attached to the inside surface of the waste container and to the surface and gaps of the waste. The gnats that fly in after the spraying of the aerosol agent wander around the inside surface of the waste container or the surface of the waste, or enter the gaps in the waste, and come into contact with the spray particles that have been attached, so that the effect of the pest control component of the chemical solution prevents the gnats from laying eggs. Even if eggs are laid, subsequent hatching is inhibited, or the hatched larvae wander around the inside surface of the waste container or the surface of the waste, or enter the gaps in the waste, and come into contact with the spray particles that have been attached, so that their growth is inhibited.

[0026] In the method for preventing the occurrence of small flies according to the present invention, In the spraying step, the aerosol is preferably sprayed so that the 50% particle size (D50) in a volume-integrated distribution at 25° C. and a spray distance of 15 cm is in the range of 10 to 45 μm.

[0027] According to the method for preventing the occurrence of small flies of this configuration, the aerosol agent is sprayed so that the D50 particle size falls within the above range, and the sprayed particles are dispersed and attached to the gaps of the waste piled up in a high volume and three-dimensional manner. Since adults and larvae of fruit flies and the like have the habit of hiding in waste such as food waste, they are likely to come into contact with the sprayed particles attached to the gaps of the waste at this time. As a result, the egg-laying of small flies can be suppressed, and the occurrence of small flies can be effectively prevented. As a result, the egg-laying of small flies can be suppressed, and even if eggs are laid, the subsequent hatching can be inhibited, or the growth of the larvae after hatching can be inhibited, and the occurrence of small flies can be effectively prevented.

[0028] In the method for preventing the occurrence of small flies according to the present invention, The aerosol preferably contains at least one pyrethroid insecticidal component selected from the group consisting of transfluthrin, profluthrin, and metofluthrin.

[0029] According to the method for preventing the occurrence of small flies having this configuration, by using the above-mentioned pyrethroid insecticidal component, the insecticidal component volatilizes sufficiently even at room temperature, and the occurrence of small flies can be effectively prevented.

[0030] In the method for preventing the occurrence of small flies according to the present invention, The pyrethroid insecticidal component is preferably contained at 1.0 to 7.0 w / v %.

[0031] According to the method for preventing the occurrence of small flies having this configuration, by containing the pyrethroid insecticidal component in the above range, the occurrence of small flies can be prevented even with a small amount of spray. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] The spray product for controlling small flies of the present invention includes a container that contains an aerosol agent containing a chemical solution and a propellant, and a spray nozzle that sprays the aerosol agent from the container, and is used to prevent the occurrence of small flies on the object to be sprayed. Here, "preventing the occurrence of small flies" means "small flies do not approach the object," "small flies do not lay eggs on the object," "small fly eggs laid on the object do not hatch," or "even if small flies hatch from eggs laid on the object, they are immediately knocked down or killed." The spray product for controlling small flies of the present invention will be described below. However, the present invention is not intended to be limited to the configuration described in the embodiment described below.

[0033] <Chemical solution> [Pest control ingredient] The pest control component, which is one of the main components of the drug solution, is preferably a pyrethroid insecticidal component, and for example, transfluthrin, profluthrin, and metofluthrin are preferably selected. These pyrethroid insecticidal components may be used alone or in combination. These pyrethroid insecticidal components include optical isomers and geometric isomers based on asymmetric carbon, which are also included in the pest control component.

[0034] The content of the pest control component in the liquid medicine is preferably 1.0 to 50% by volume, taking into consideration that the pest control component is dissolved in an organic solvent and then sprayed on the target object. In this range, the pest control component is easily dissolved in the organic solvent, and when the liquid medicine is sprayed, the spray particles are formed in an optimal state, and the effect of the pest control component can be exhibited. If the content of the pest control component in the liquid medicine is less than 1.0% by volume, the pest control component cannot be effectively exerted, and there is a risk that the control effect of small flies will be insufficient. On the other hand, if the content of the pest control component in the liquid medicine exceeds 50% by volume, the concentration of the pest control component will be high, making it difficult to properly prepare the liquid medicine.

[0035] As described above, the pest control component contained in the small fly control spray product of the present invention is preferably transfluthrin, profluthrin, metofluthrin, or a combination thereof, but in addition to these components, it is also possible to contain other pyrethroid compounds such as natural pyrethrins, momfluorothrin, empenthrin, phthalthrin, resmethrin, cyfluthrin, fenothrin, permethrin, cyphenothrin, cypermethrin, allethrin, prallethrin, furamethrin, imiprothrin, bifenthrin, and etofenprox, silicon compounds such as silafluofen, organophosphorus compounds such as dichlorvos and fenitrothion, and carbamate compounds such as propoxur.

[0036] [Organic solvents] The main components of the liquid medicine include organic solvents in addition to the above-mentioned pest control components. The organic solvent can prepare the liquid medicine by dissolving the above-mentioned pest control components, and can form optimal spray particles when the prepared liquid medicine is sprayed. In the spray product for controlling small flies of the present invention, the organic solvent is preferably alcohols and higher fatty acid esters. As the alcohols, lower alcohols having 2 to 3 carbon atoms are preferred, and ethanol is particularly preferred. As the higher fatty acid esters, those having a total number of carbon atoms of 13 to 20 are preferred, and those having a total number of carbon atoms of 16 to 20 are more preferred, and examples thereof include isopropyl myristate, butyl myristate, hexyl laurate, and isopropyl palmitate. Of these, isopropyl myristate is particularly preferred. The organic solvent can also be mixed with, for example, hydrocarbon solvents such as n-paraffin and isoparaffin, glycol ethers having a carbon number of 3 to 6, and ketone solvents.

[0037] [Other ingredients] In addition to the above-mentioned components, the spray product for controlling small flies of the present invention can also be appropriately blended with antifungal agents, antibacterial agents, bactericides, fragrances, deodorants, stabilizers, antistatic agents, antifoaming agents, excipients, etc., which are targeted at molds and fungi, etc. Examples of antifungal agents, antibacterial agents, and bactericides include hinokitiol, 2-mercaptobenzothiazole, 2-(4-thiazolyl)benzimidazole, 5-chloro-2-methyl-4-isothiazolin-3-one, triforine, 3-methyl-4-isopropylphenol, ortho-phenylphenol, etc. Examples of fragrances include orange oil, lemon oil, lavender oil, peppermint oil, eucalyptus oil, citronella oil, lime oil, yuzu oil, jasmine oil, cypress oil, green tea essential oil, limonene, α-pinene, linalool, geraniol, phenylethyl alcohol, amylcinnamic aldehyde, cuminaldehyde, benzyl acetate, and other aromatic components, as well as fragrance components containing leaf alcohol and leaf aldehyde, known as the "scent of greenery."

[0038] <Propellant> The propellants used in the spray product for controlling small flies of the present invention include liquefied petroleum gas (LPG), dimethyl ether (DME), nitrogen gas, carbon dioxide gas, nitrous oxide, compressed air, etc. The above propellants can be used alone or in a mixed state, but those containing LPG as the main component are easy to use.

[0039] In the spray product for controlling small flies of the present invention, the blending ratio (a / b) of the liquid medicine (a) and the propellant (b) is adjusted to 9 / 91 to 50 / 50 by volume. By adjusting to such a range, the spray particles can be optimally formed from the nozzle connected to the constant-amount spray valve provided in the pressure-resistant container. The spray particles once sprayed can quickly move to and adhere to the surface of the object to be sprayed, and the vaporization of the pest control component can be sufficiently suppressed after attachment, so that the spray particles can exert a small fly occurrence prevention effect for a long period of time on the object to be sprayed. If the proportion of the propellant (b) is increased with respect to the blending ratio (a / b) of 9 / 91, that is, if a large amount of the propellant is enclosed in the pressure-resistant container, the spray particles formed from the liquid medicine to be sprayed are finer than necessary, so that it may be difficult to suppress the vaporization of the pest control component after attachment to the surface of the object to be sprayed. This may make it difficult to prevent the occurrence of small flies for a long period of time. On the other hand, if the proportion of propellant (b) is reduced when the mixing ratio (a / b) is 50 / 50, that is, if the amount of propellant enclosed in the pressure-resistant container is reduced, the spray particles will become larger, and when the spray target is a bulky, three-dimensional pile of waste such as food waste, it may be difficult for the spray particles to diffuse sufficiently into the gaps in the target. This may result in failure to effectively prevent the occurrence of small flies.

[0040] In the spray product for controlling small flies of the present invention, when the above-mentioned pyrethroid insecticide (transfluthrin, profluthrin, metofluthrin, or a combination thereof) is used as the pest control ingredient, the aerosol is adjusted to contain 1.0 to 7.0 w / v% of the pyrethroid insecticide. By adjusting to such a range, it is possible to prevent the occurrence of small flies even with a small amount of spray. If the content of the pyrethroid insecticide is less than 1.0 w / v%, the amount of the pyrethroid insecticide in the spray particles becomes insufficient, and it may be difficult to prevent the occurrence of small flies for a long period of time. If the content of the pyrethroid insecticide exceeds 7.0 w / v%, an excessive amount of the pyrethroid insecticide is released, and the amount used becomes excessive, which is economically disadvantageous.

[0041] <Spray products for controlling small flies> As described above, the spray product is completed by selecting the pest control ingredient, the organic solvent, the propellant, and other ingredients to be blended as necessary, and sealing them in a pressure-resistant container. This spray product is the small fly control spray product of the present invention, and is used for spraying the aerosol agent as spray particles toward the target object. The liquid medicine is mainly composed of the pest control ingredient and the organic solvent, and is strictly speaking different from the propellant. However, since the liquid medicine is released to the outside of the pressure-resistant container at the same time as the propellant, in the following description, the aerosol agent containing the liquid medicine and the propellant may be treated as the "liquid medicine". Here, the spray valve provided in the small fly control spray product of the present invention will be described. The small fly control spray product of the present invention is mainly composed of a pressure-resistant container (aerosol container), a fixed-amount spray valve, and a spray nozzle. A spray button, which is an operating unit for spraying the liquid medicine, is connected to the fixed-amount spray valve, and a spray nozzle is provided with a spray port through which the liquid medicine is sprayed to the outside from the aerosol container.

[0042] When the spray button of the spray product for controlling small flies is pressed once, the pressure of the propellant operates the metered injection valve, and the liquid medicine in the pressure-resistant container rises to the injection port and is sprayed on the object to be sprayed. The injection volume of the liquid medicine at this time is adjusted to 0.1 to 0.4 mL, more preferably 0.1 to 0.2 mL. Within such a range, the spray particles formed from the sprayed liquid medicine can effectively exert a control effect on the object to be sprayed. If the injection volume is less than 0.1 mL, the injection volume is too small and the amount of spray particles attached to the surface of the object to be sprayed is insufficient, and the opportunity for small flies to come into contact with the spray particles is reduced, which may make it difficult to appropriately prevent the occurrence of small flies. On the other hand, if the injection volume exceeds 0.4 mL, an excessive amount of liquid medicine is released as the spray particles, and the amount of liquid medicine used is excessive, which is economically disadvantageous.

[0043] The diameter of the nozzle provided on the injection nozzle is preferably set to 0.2 to 1.0 mm, more preferably 0.7 to 1.0 mm. In this range, an appropriate injection pattern is obtained, and the injection particles are easily attached to the injection target. Therefore, the occurrence of small flies can be appropriately prevented on the injection target. If the nozzle diameter is less than 0.2 mm, the injection pattern becomes too narrow, and the range on the surface of the injection target where the injection particles adhere is limited. If the nozzle diameter exceeds 1.0 mm, the injection pattern becomes excessively wide, and the injection particles may be removed from the injection target during injection, making it difficult to attach an appropriate amount of injection particles to the injection target. Therefore, the opportunity for the injection flies wandering on the surface of the injection target to come into contact with the injection particles is reduced, and there is a risk that the occurrence of small flies cannot be appropriately prevented.

[0044] [Sprayed particles] When the liquid medicine is sprayed once from the spray product for controlling small flies of the present invention, spray particles are formed from the liquid medicine. The sprayed spray particles adhere to the surface of the object to be sprayed. The particle diameter of the spray particles can be set to various values ​​by adjusting parameters such as the nozzle diameter of the spray nozzle, the blending ratio of the liquid medicine to the propellant, the composition of the propellant used, and the internal pressure of the spray product. These parameters may be adjusted alone or in combination. The preferred particle diameter of the spray particles is 10 to 45 μm in terms of 50% particle diameter (D50) in the volume cumulative distribution at 25° C. and a spray distance of 15 cm. If the particle diameter is within this range, the spray particles sprayed to the object to be sprayed will surely adhere to the surface of the object to be sprayed. In particular, when waste such as food waste that is piled up in a high volume and three-dimensional manner is sprayed as the object to be sprayed, the spray particles will diffuse and adhere not only to the outer surface of the waste but also to the gaps in the waste. Since small flies have a habit of wandering around the surface of waste or burrowing into waste to lay eggs, spray particles containing a pest control component can be brought into contact with these small flies. As a result, the small flies that come into contact with the pest control component can be knocked down or killed, thereby exerting an egg-laying suppression effect. In addition, since the particle diameter of the spray particles is appropriately large, it is possible to suppress the pest control component from volatilizing from the spray particles even after they have attached to the spray object. Therefore, even after they have attached to the spray object, the pest control component gradually volatilizes from the spray particles over a long period of time, and egg-laying is suppressed during that time. Even if small flies lay eggs on the spray object, the hatching inhibition effect can be exerted by the eggs coming into direct contact with the pest control component attached to the spray object, or by the pest control component volatilized over a long period of time from the spray particles attached to the spray object. Even if the larvae hatch, they can be killed by contacting the pest control component attached to the spray target or by the pest control component volatilized from the attached spray particles. If the D50 particle size of the spray particles is less than 10 μm, the proportion of spray particles that are too small to reach the spray target and do not adhere to it increases, or even if the pest control component adheres to the target, it may be difficult to sufficiently suppress the volatilization of the pest control component from the spray particles after adhesion.On the other hand, if the D50 particle size exceeds 45 μm, the particle size is too large and there is a risk that the sprayed particles will not penetrate into the gaps in the waste, such as food waste, which is piled up three-dimensionally and in a high volume.

[0045] The period during which the pest control component continues to volatilize from the spray particles attached to the spray target is preferably 1 day or more, more preferably 3 days or more, and even more preferably 7 days or more. Since small flies generally hatch about one day after laying eggs, if the period during which the pest control component continues to volatilize is 1 day or more, the hatching of such small flies can be inhibited, and even if they hatch, the larvae can be killed. Furthermore, since small flies have a life cycle of about 10 days to 2 weeks, if the period during which the pest control component continues to volatilize is 7 days or more, most stages in the life cycle, such as eggs, larvae, pupae, and adults, can be covered, and a strong effect of preventing the occurrence of small flies can be obtained.

[0046] As described above, the spray product for controlling small flies of the present invention is sprayed once on the object to be sprayed, and the spray particles are diffused and attached to the surface and gaps of the object to be sprayed. This allows the pest control component to efficiently contact the small flies wandering on the surface of the object to be sprayed, knocking down or killing the small flies, thereby exerting an egg-laying suppression effect. In addition, since the pest control component is gradually volatilized from the spray particles attached to the object to be sprayed over a long period of time, even if the small flies lay eggs on the object to be sprayed, the pest control component can affect the eggs of the small flies and exert a hatching inhibition effect. In addition, even if the larvae hatch, they can be knocked down or killed by the pest control component because they come into contact with the spray particles attached by wandering around the surface, gaps, etc. of the object to be sprayed. In this way, the spray product for controlling small flies of the present invention can be used to prevent the occurrence of small flies in the object to be sprayed. As a result, the small flies can be controlled for a long period of time.

[0047] <How to prevent the occurrence of small flies> The method for preventing the occurrence of small flies of the present invention is carried out using the above-mentioned spray product for controlling small flies. First, the nozzle of the spray product for controlling small flies is directed toward the inside of a waste container, and the spray button is pressed once, and an aerosol agent containing a chemical solution and a propellant is sprayed from the spray product for controlling small flies into the inside of the waste container (spraying step). The sprayed aerosol agent becomes spray particles and adheres to the inner surface of the waste container. At this time, the waste container may be in a state where waste such as food waste is placed therein, or in a state where no waste is placed therein. Waste is placed in the waste container in this state (putting step). After that, even if small flies are attracted to the waste and invade the waste container, they will wander around the inner surface of the waste container, come into contact with the spray particles attached thereto, and will be knocked down or killed by the effect of the pest control component. Even if they lay eggs in the waste without coming into contact with the spray particles, the pest control component that is gradually volatilized from the spray particles over a long period of time can inhibit the eggs from hatching.

[0048] In addition, the method for preventing the occurrence of small flies of the present invention may be to directly spray an aerosol agent containing a chemical solution and a propellant onto the waste (spraying step) by pointing the nozzle of a spray product for controlling small flies towards the waste before placing it into a waste container. The sprayed aerosol agent becomes spray particles, which penetrate and adhere not only to the surface of the waste but also to gaps in the waste. The waste in this state is placed into a waste container (putting step). Alternatively, the method for preventing the occurrence of small flies of the present invention may be to put the waste into the inside of a waste container (putting step), and then to spray an aerosol agent containing a chemical solution and a propellant towards the inside of the waste container containing the waste (spraying step). The sprayed aerosol agent becomes spray particles, which penetrate and adhere not only to the inner surface of the waste container and the surface of the waste, but also to gaps in the waste. Even if flies are attracted to the waste and enter the waste container, they will wander around the inside surface of the waste container or the surface of the waste, or hide in gaps in the waste to lay eggs, and will come into contact with the spray particles and be knocked down or killed by the effect of the pest control ingredient. Even if they lay eggs in the waste without coming into contact with the spray particles, the pest control ingredient that is gradually volatilized from the spray particles over a long period of time can inhibit the eggs from hatching.

[0049] As described above, the spray product for controlling small flies according to the present invention can adhere to the spray target and gradually volatilize the pest control component from the adhered spray particles for a long period of time. Therefore, the method for preventing the occurrence of small flies performed using this spray product for controlling small flies can prevent the occurrence of small flies in waste and waste containers for a long period of time by spraying once. EXAMPLES

[0050] In order to confirm the effect of preventing small flies from occurring with respect to the spray product for controlling small flies of the present invention, aerosol agents and propellants were pressurized and filled in an aerosol container (pressure-resistant container) with a metered-dose injection valve. A number of spray products for controlling small flies (Examples 1 to 13) having the characteristic configuration of the present invention were prepared, and a test for confirming the effect of preventing small flies from occurring was carried out. For comparison, spray products for controlling small flies (Comparative Examples 1 to 3) not having the characteristic configuration of the present invention were prepared, and a similar test for confirming the effect of preventing small flies from occurring was carried out.

[0051] As shown in Table 1 for Examples 1 to 13, spray products for controlling small flies were prepared according to the compositions and conditions of each Example, and the following tests were performed. For Comparative Examples 1 to 3, spray products for controlling small flies were prepared according to the compositions and conditions shown in Table 1, and tests similar to those of the Examples were performed. In Table 1, the concentrations of the pest control ingredients in the aerosol agent (w / v%) are shown in parentheses in addition to the concentrations in the drug solution (w / v%).

[0052] [Table 1]

[0053] (1) Efficacy test (direct spray) A total of 100 adult Drosophila melanogaster and D. pedunculata flies were released into a plastic cylinder (inner diameter 20 cm, height 43 cm), and the test agent was sprayed once from a distance of about 10 to 15 cm. After two hours of exposure, all test insects were collected and the mortality rate was calculated. During this time, the number of adult flies that fell and turned over over time was counted, and the KT was calculated. 50 The test results are shown in Table 2.

[0054] [Table 2]

[0055] From the results in Table 2, when sprayed directly on adult small flies, the mortality rate was 100% in Examples 1 to 11 and Comparative Examples 1 and 2, which used products containing transfluthrin as the pest control ingredient, and the KT 50The values ​​were also maintained at advantageous values, and it was confirmed that there was no significant difference in the direct insecticidal effect. Example 12, which contained profluthrin as a pest control ingredient, and Example 13, which contained metofluthrin, also confirmed an insecticidal effect that had no practical problems. Comparative Example 3, which used phthalthrin, which has a lower room temperature volatility than transfluthrin, profluthrin, and metofluthrin, as a pest control ingredient, was confirmed to be inferior in both insecticidal effect and rapidity of action to Examples 1 to 13 and Comparative Examples 1 to 2.

[0056] (2) Test to confirm effectiveness in preventing small fly infestations 1 The test agent was sprayed once from a distance of about 10 to 15 cm inside a plastic cylinder (inner diameter 20 cm, height 43 cm) to serve as a treatment area. An untreated cylinder was also prepared as a control area. They were left to stand at room temperature, and one day after treatment, plastic cups (inner diameter 10 cm, height 10 cm) containing food waste (5 g of pork, 10 g of apple, 10 g of cabbage) were inserted into each cylinder, and placed side by side in a room where about 100 adult Drosophila melanogaster and D. moniliformes were released. One day after placement, the plastic cups in each cylinder were covered and collected, and the total number of adult flies, including dead ones, in the cups was counted, and the presence or absence of egg laying was confirmed. Furthermore, the plastic cups were stored at 25°C, and the number of larvae that emerged one week later was counted. A similar test was also performed on the cylinders 7 days after treatment with the test agent. The test was repeated three times, one day and seven days after treatment. This test procedure assumes the implementation of a method for preventing the occurrence of small flies by spraying an aerosol agent containing a chemical solution and a propellant into the inside of a waste container (spraying process), and then putting waste into the waste container (putting-in process). The test results are shown in Table 3.

[0057] [Table 3] (Evaluation Criteria) Spawning - :0 pieces +- :0~1 piece + :2~10 pieces ++ :10~50 pieces +++ :50 or more Larvae development - :0 +- :0~1 + : 2 to 30 ++: 30-100 +++: 100-200 ++++: 200 or more

[0058] From the results of Table 3, it was confirmed that in both the samples after 1 day of treatment and the samples after 7 days of treatment, the number of eggs laid 1 day after placement and the number of larvae emerged 1 week after placement were significantly suppressed compared to the control area in Examples 1 to 13. Since the samples after 1 day of treatment and the samples after 7 days of treatment had similar effects, it was confirmed that the effect of preventing small fly emergence was sustained for a long period of time in Examples 1 to 13.

[0059] The number of larvae that emerged in the sample 7 days after treatment was only one in Example 2, in which the D50 particle size of the spray particles was 20 μm, whereas the number of larvae that emerged was 104 in Comparative Example 1, in which the D50 particle size of the spray particles was outside the range specified in the present invention, and the number of larvae that emerged was 32 in Comparative Example 2. Thus, Comparative Examples 1 and 2 were inferior in the long-term effect of preventing small fly occurrence. In addition, the initial number of adult insects that had invaded the cup at the time of collection 1 day after the side-by-side placement was not significantly different between the treated area and the control area in both the sample 1 day after treatment and the sample 7 days after treatment in all of Examples 1 to 13 and Comparative Examples 1 to 3. From this, it is presumed that the excellent effect of preventing small fly occurrence in Examples 1 to 13 is not due to the initial repellent effect of the pest control ingredient, but is due to the small fly coming into contact with the spray particles attached to the inside of the cylinder, or the pest control ingredient volatilizing from the spray particles over a long period of time, resulting in the appearance of the effect of preventing small fly occurrence. In addition, in both Example 2 and Comparative Example 3, the D50 particle size of the sprayed particles was 20 μm, but in both the samples taken 1 day after treatment and the samples taken 7 days after treatment, the number of eggs laid and the number of larvae that emerged were significantly suppressed in Example 2, confirming that the use of transfluthrin as a pest control ingredient is particularly preferable.

[0060] (3) Test to confirm effectiveness of preventing small fly infestation 2 The test agent was sprayed once from a distance of about 10 to 15 cm into a plastic cup (inner diameter 10 cm, height 10 cm) containing food waste (5 g of pork, 10 g of apple, 10 g of cabbage), and this was used as the treatment group. In addition, an untreated cup containing the same amount of food waste was also prepared and kept stationary at room temperature. After one week, these cups were placed side by side in a chamber (180 cm x 180 cm x 180 cm) in which about 100 adult Drosophila melanogaster and D. moniliformes were released. After one day, each plastic cup was covered and collected, the number of adult flies in the cup was counted, and the presence or absence of egg laying was confirmed. Furthermore, this plastic cup was stored at 25°C, and the number of larvae that emerged after one week was counted. The same test was also performed on the plastic cups 7 days after treatment with the test agent. The test was repeated three times each one day and seven days after treatment. This test procedure assumes that a method of preventing the occurrence of small flies is carried out by spraying an aerosol agent containing a chemical solution and a propellant toward the waste before it is placed in a waste container (spraying process), and then placing the waste in the waste container (putting-in process). The test results are shown in Table 4. The evaluation criteria are the same as those in Test 1 for Confirming the Effect of Preventing the Occurrence of Small Fly, shown in Table 3.

[0061] [Table 4]

[0062] From the results of Table 4, it was confirmed that in Examples 1 to 13, the number of eggs laid one day after the sample was treated and the number of larvae emerged one week after the sample was placed side by side was significantly suppressed compared to the control area in both the sample treated one day after the sample was treated and the sample treated seven days after the sample was treated, so that it was confirmed that the effect of preventing small flies from emerging was sustained for a long period of time in Examples 1 to 13. In particular, in the results of Table 4, the number of larvae emerged in both the sample treated one day after the sample was treated and the sample treated seven days after the sample was treated was zero in Examples 1 to 13, and a better effect of preventing small flies from emerging was exhibited compared to the results of Table 3. The reason why a better effect of preventing small flies from emerging was exhibited in the small flies emergence prevention effect confirmation test 2 is that the test agent was directly sprayed on the garbage, so that the sprayed particles penetrated the garbage through the gaps and adhered to the inside, which acted on the small flies hiding in the garbage, suppressing egg laying, and even if eggs were laid, the eggs could also be inhibited from hatching, and even if they were able to hatch, the growth of the larvae was inhibited thereafter. Furthermore, among Examples 1 to 11, which used transfluthrin as the pest control ingredient, Examples 2 to 4, 7 and 8 had lower egg-laying numbers than Example 6, which had the smallest D50 particle diameter of the sprayed particles, and Example 5, which had the largest D50 particle diameter, and were therefore confirmed to exhibit particularly excellent egg-laying inhibition effects.

[0063] On the other hand, in Comparative Examples 1 to 3, the number of larvae generated was greater in both the samples taken 1 day after treatment and the samples taken 7 days after treatment than in Examples 1 to 13, and the preventive effect against small fly generation was inferior. In particular, in the samples taken 7 days after treatment, the number of larvae generated was 139 in Comparative Example 1 and 66 in Comparative Example 2. This is probably because in Comparative Examples 1 and 2, the D50 particle size of the sprayed particles was outside the range specified in the present invention, so the sprayed particles did not penetrate sufficiently into the gaps in the food waste, and eggs hatched in the gaps in the food waste and larvae grew up. [Industrial Applicability]

[0064] The spray product for controlling small flies of the present invention can be used to prevent the occurrence of small flies, and is particularly suitable for use against fruit flies, flea flies, moth flies, fungus flies, and the like.

Claims

1. A container for enclosing an aerosol agent containing a medicinal solution and a propellant; a constant-volume injection valve provided on the container; a spray nozzle for spraying the aerosol agent from the container; A spray product for controlling small flies, comprising: The aerosol agent contains a pyrethroid insecticidal component that is volatile at room temperature, including transfluthrin, and an organic solvent that is a lower alcohol having 2 to 3 carbon atoms; The injection nozzle has an injection port having a diameter of 0.7 to 1.0 mm, The particle diameter of the spray particles sprayed from the spray nozzle is configured to be in the range of 10 to 45 μm as a 50% particle diameter (D50) in a volume cumulative distribution at 25° C. and a spray distance of 15 cm, A spray product for controlling small flies, which is used to prevent the occurrence of small flies on the target object.

2. The spray product for controlling small flies according to claim 1, wherein the mixing ratio of the liquid medicine to the propellant in the aerosol agent enclosed in the container is adjusted to 9:91 to 50:

50.

3. The spray product for controlling small flies according to claim 1 or 2, containing 1.0 to 7.0 w / v % of the pyrethroid insecticidal component.

4. A method for preventing the infestation of small flies in a waste container for containing waste, comprising: a step of injecting an aerosol agent containing a medicinal liquid and a propellant into the waste container through a nozzle using a metered dose injection valve; placing the waste material into the waste material container; Inclusive of The aerosol agent contains a pyrethroid insecticidal component that is volatile at room temperature, including transfluthrin, and an organic solvent that is a lower alcohol having 2 to 3 carbon atoms; The injection nozzle has an injection port having a diameter of 0.7 to 1.0 mm, A method for preventing the occurrence of small flies, wherein in the spraying step, the aerosol agent is sprayed so that the 50% particle size (D50) in a volume-integrated distribution at 25°C and a spray distance of 15 cm is in the range of 10 to 45 μm.

5. A method for preventing the infestation of small flies in a waste container for containing waste, comprising: a step of spraying an aerosol agent containing a chemical solution and a propellant onto the waste material through a spray nozzle using a metered dose spray valve; placing the waste material into the waste material container; Inclusive of The aerosol agent contains a pyrethroid insecticidal component that is volatile at room temperature, including transfluthrin, and an organic solvent that is a lower alcohol having 2 to 3 carbon atoms; The injection nozzle has an injection port having a diameter of 0.7 to 1.0 mm, A method for preventing the occurrence of small flies, wherein in the spraying step, the aerosol agent is sprayed so that the 50% particle size (D50) in a volume-integrated distribution at 25°C and a spray distance of 15 cm is in the range of 10 to 45 μm.

6. A method for preventing the infestation of small flies in a waste container for containing waste, comprising: A step of placing the waste inside the waste container; an injection step of injecting an aerosol agent containing a medicinal liquid and a propellant into the waste container containing the waste by using a constant-dose injection valve and an injection nozzle; Inclusive of The aerosol agent contains a pyrethroid insecticidal component that is volatile at room temperature, including transfluthrin, and an organic solvent that is a lower alcohol having 2 to 3 carbon atoms; The injection nozzle has an injection port having a diameter of 0.7 to 1.0 mm, A method for preventing the occurrence of small flies, wherein in the spraying step, the aerosol agent is sprayed so that the 50% particle size (D50) in a volume-integrated distribution at 25°C and a spray distance of 15 cm is in the range of 10 to 45 μm.

7. The method for preventing the occurrence of small flies according to any one of claims 4 to 6, comprising the pyrethroid insecticidal component at 1.0 to 7.0 w / v %.

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