Animal pest control equipment

Abstract

The objective is to provide an animal pest control device that prevents deformation of the container body and leakage of the pesticide, even when the container body is significantly distorted, and when alcohol or medium-chain triglyceride is used as the solvent for the pesticide. [Solution] The problem could be solved by a pest control device for animals, which comprises a container 1 made of polyolefin resin, having an active ingredient for pest control, a solvent containing alcohol or medium-chain triglyceride, a cut-off piece 11 to be cut off when used, a nozzle part 13 connected to the cut-off piece via a constricted part 12, a shoulder part 14 extending from the nozzle part and inclined at a larger angle than the nozzle part, and a container body part 16 extending from the shoulder part and sealed at a sealing part 15, wherein the length of the container body part is 0.5 to 4.0 times the diameter at the boundary between the shoulder part and the container body part or the length of the longest diagonal.

Description

Technical Field

[0001] The present invention relates to a control tool having excellent control efficacy against pests such as fleas, ticks, and mites that attach to animals such as pets and livestock. Specifically, it relates to a control tool comprising a drug containing an active ingredient and a solvent for controlling these pests, and a container for accommodating the drug.

Background Art

[0002] Conventionally, in order to control pests such as fleas, ticks, and mites that attach to animals in contact with humans, such as pets like dogs, cats, rabbits, and livestock like pigs and cows, and have a harmful effect on these animals, various control tools for controlling these pests by dripping, spraying, applying, etc. onto the body surface of these animals are known.

[0003] For example, as shown in FIG. 3 of Patent Document 1, a container is disclosed which comprises a nozzle portion with a constricted portion made of a thermoplastic resin such as a polyethylene resin or a polypropylene resin, a shoulder portion extending from the nozzle portion and inclined at an angle larger than that of the nozzle portion, and a container body extending from the shoulder portion. After filling a predetermined pest control agent therein, the end portion of the container body is heat-sealed with a heat sealer. And when using such a container, at the time of use, immediately before use, the tip portion (cup-shaped portion) is folded off or cut off by pinching or the like from the constricted portion to open it, and the content is dripped or applied onto the body surface of the animal while appropriately pressing the container body portion with a finger as needed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the invention described in Patent Document 1, the length of the container body is approximately five times the diameter at the boundary between the shoulder portion and the container body. Although the distortion of the container body is not very large, when the amount of a predetermined drug to be filled is small, shortening the length of the container body reduces the effects of oxidation by air, which increases the distortion of the container body. This can lead to the container body deforming or the drug leaking out due to incompatibility with the solvent used in the drug when stored for a long period of time.

[0006] Therefore, the present invention aims to provide an animal pest control device that has excellent extermination efficacy against pests such as lice, fleas, and mites that attach to animals that have contact with humans, such as pets like dogs, cats, and rabbits, and livestock like pigs and cattle, and which prevents deformation of the container body and leakage of the pesticide even when the amount of predetermined pesticide to be filled is small and the container body is significantly distorted, when alcohol or medium-chain triglyceride is used as the solvent for the pesticide. [Means for solving the problem]

[0007] [1] That is, the present invention relates to an animal pest control device comprising a drug containing an active ingredient for pest control, at least one solvent selected from alcohol and medium-chain fatty acid triglycerides, a cut piece (11) to be cut off when in use, a substantially frustoconical nozzle portion (13) connected to the cut piece (11) via a constricted portion (12), a substantially frustoconical shoulder portion (14) extending from the nozzle portion (13) and inclined at a larger angle than the nozzle portion (13), and a container body portion (16) extending from the shoulder portion (14) and sealed at a sealing portion (15), wherein the container body portion (1) is made of a polyolefin resin and contains the drug, and the length (L) of the container body portion (16) is 0.5 to 4.0 times the diameter (D) of the shoulder portion (14) at the boundary with the container body portion (16) or the length of the longest diagonal.

[0008] [2] The animal pest control device according to [1], characterized in that the thickness of the container body (16) is 0.4 to 1 mm.

[0009] [3] The animal pest control device according to either [1] or [2] above, characterized in that the effective pest control ingredient is at least one compound selected from pyrethroid compounds or macrolide compounds.

[0010] [4] The animal pest control device according to either [1] or [2], characterized in that the medium-chain fatty acid triglyceride is an ester compound produced from a fatty acid having 8 to 10 carbon atoms and glycerol. [Effects of the Invention]

[0011] According to the present invention, even when the amount of a predetermined drug to be filled is small and the distortion of the container body is large, when alcohol or medium-chain triglyceride is used as the solvent for the drug, the container body can be prevented from deforming and the drug from seeping out. [Brief explanation of the drawing]

[0012] [Figure 1] This is a front view showing one embodiment of the animal pest control device of the present invention. [Figure 2] This is a plan view showing one embodiment of the animal pest control device of the present invention. [Modes for carrying out the invention]

[0013] The embodiments of the animal pest control device of the present invention will be described in detail below. Note that the "~" notation used to indicate a range in this description includes both an upper and lower limit.

[0014] The agent in this invention is a formulation containing an active ingredient for pest control and at least one solvent selected from alcohol and medium-chain triglyceride. When this agent is dropped onto animals such as pets and livestock, it spreads over the surface of their bodies, killing or repelling pests such as lice, fleas, and mites that attach to them.

[0015] The active ingredient for pest control is preferably at least one compound selected from pyrethroid compounds or macrolide compounds. Pyrethroid compounds are compounds obtained as chrysanthemum acid, an insecticidal component contained in chrysanthemums, and its derivatives. Macrolide compounds are compounds having a macrolide ring, which is a lactone ring such as a 12- to 18-membered ring. Macrolide compounds are known as products of actinomycetes in soil, etc. The use of pyrethroid compounds and macrolide compounds is preferable because they have a control effect such as killing or repelling lice, fleas, mites, etc. that attach to animals such as pets and livestock by acting on their nervous system, and thus act as the active ingredient of the pesticide.

[0016] As pyrethroid compounds, natural pyrethroids include pyrethrin I <(1R,3R)-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid (1S)-2-methyl-4-oxo-3-(2Z)-2,4-pentadienyl-2-cyclopenten-1-yl ester>, pyrethrin II <(1R,3R)-3-[(1E)-3-methoxy-2-methyl-3-oxo-1-propenyl]-2,2-dimethylcyclopropanecarboxylic acid (1S)-2-methyl-4-oxo-3-(2Z)-2,4-pentadienyl-2-cyclopenten-1-yl ester>, and synerin I <(1R <(1R,3R)-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid (1S)-3-(2Z)-(2-butenyl)-2-methyl-4-oxo-2-cyclopenten-1-yl ester>, Synerin II <(1R,3R)-3-[(1E)-3-methoxy-2-methyl-3-oxo-1-propenyl]-2,2-dimethylcyclopropanecarboxylic acid (1S)-3-(2Z)-(2-butenyl)-2-methyl-4-oxo-2-cyclopenten-1-yl ester>, Jasmolin I <(1R,3R)-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid (1S)-2-methyl-4-oxo-3-(2Z)-2-pentenyl-2-cyclopenten-1-yl ester, Jasmolin II <(1R,3R)-3-[(1E)-3-methoxy-2-methyl-3-oxo-1-propenyl]-2,2-dimethylcyclopropanecarboxylic acid> (1S)-2-methyl-4-oxo-3-(2Z)-2-pentenyl-2-cyclopenten-1-yl ester, as synthetic pyrethroids, Allethrin I <2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylic acid 2-methyl-4-oxo-3-(2-propenyl)-2-cyclopenten-1-yl ester>, Allethrin II <3-(3-methoxy-2-methyl-3-oxo-1-propenyl)-2,2-dimethylcyclopropanecarboxylic acid 2-methyl-4-oxo-3-(2-propenyl)-2-cyclopenten-1-yl ester>, Phthalthrin (also known as;D-tetramethrin)<(1,3-dioxo-4,5,6,7-tetrahydroisoindolin-2-yl)methyl=2,2-dimethyl-3-(2-methylpropa-1-en-1-yl)cyclopropane-1-carboxylate>, resmethrin<(5-benzyl-3-furyl)methyl=2,2-dimethyl-3-(2-methylpropa-1-en-1-yl)cyclopropanecarboxylate>, phenothrin<3-phenoxybenzyl=2-dimethyl-3-(methylpropenyl)cyclopropanecarboxylate>, permethrin<3-phenoxybenzyl=3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate>, cyphenothrin<cyano(3-phenoxyphenyl)methyl=2,2-dimethyl-3-(2-methyl Preferred pyrethroid compounds include <propa-1-en-1-yl)cyclopropanecarboxylate>, etofenprox <4-(4-ethoxyphenyl)-4-methyl-1-(3-phenoxyphenyl)-2-oxapentane>, metofluthrin <2,2-dimethyl-3-(propa-1-en-1-yl)cyclopropanecarboxylic acid = 2,3,5,6-tetrafluoro-4-(methoxymethyl)benzyl>, transfluthrin <(1R,3S)-3-[(E)-2,2-dichlorovinyl]-2,2-dimethylcyclopropanecarboxylic acid = 2,3,5,6-tetrafluorobenzyl>, cyfluthrin <cyano(4-fluoro-3-phenoxyphenyl)methyl = 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane-1-carboxylate>, etc. Furthermore, the above pyrethroid compounds can be used individually or in combination of two or more.

[0017] Preferred macrolide compounds include, for example, abamectin, dimadectin, doramectin, emamectin, eprinomectin, ivermectin, latidectin, lepimectin, selamectin, milbemectin, milbemycin oxime, moxidectin, nemadectin, and emamectin benzoate. Furthermore, the above macrolide compounds can be used individually or in combination of two or more.

[0018] Furthermore, phenylpyrazole compounds can be used as an active ingredient for pest control. Phenylpyrazole compounds are compounds containing a structure in which a phenyl group is substituted at the 1st position of a nitrogen-containing 5-membered ring pyrazole. Using phenylpyrazole compounds is preferable because they act as an active ingredient, providing control effects such as killing or repelling lice, fleas, and mites that attach to animals such as pets and livestock by acting on their nervous system.

[0019] Preferred phenylpyrazole compounds include, for example, fipronil and ethiprole. Furthermore, the above phenylpyrazole compounds can be used individually or in combination of two or more.

[0020] The active ingredients of pyrethroid compounds, macrolide compounds, or phenylpyrazole compounds are preferably present in a concentration of 10 to 700 g / L, and more preferably 50 to 600 g / L, of the drug in order to exert efficacy against pests such as lice, fleas, and mites.

[0021] The solvent in the drug is at least one selected from alcohol and medium-chain fatty acid triglyceride, which is a compound that dissolves the pest control active ingredient in the present invention and is a compound in a liquid state at room temperature of about 20 to 30 °C. For these solvents, only one kind may be used, or two or more kinds may be used in combination. As the alcohol, for example, diethylene glycol monoethyl ether (ethyl diglycol), ethanol, isopropanol, benzyl alcohol, etc. are preferable. The medium-chain fatty acid triglyceride is a fatty acid triglyceride having 8 to 10 carbon atoms. More specifically, it is an ester compound formed from a fatty acid having 8 to 10 carbon atoms and glycerin, and the molar ratio of the fatty acid to glycerin is 3 to 1. For example, specifically, glyceryl tri(caprylic acid·capric acid), glyceryl tricaprylate, glyceryl tricaprate, etc. are preferable. As the medium-chain fatty acid triglyceride, a compound extracted from plants or the like may be used, or a compound synthesized by a chemical method may also be used. By using at least one selected from these alcohols and medium-chain fatty acid triglycerides, it becomes difficult to wet the inner wall made of a predetermined resin in the container 1, and the drug enclosed in the container 1 is easily discharged. The solvent is appropriately formulated to have a predetermined volume after adding a pest control active ingredient or the like in order to diffuse the active ingredient into the skin of animals.

[0022] And in the drug of the present invention, other components can be mixed in the pest control active ingredient and the solvent described above within a range that does not interfere with the control effect.

[0023] A synergist may be added to the drug of the present invention. By adding a synergist, the metabolic decomposition of the pyrethroid compound, phenylpyrazole compound or macrolide compound in the body of the pest is inhibited, and the effects of the pyrethroid compound, phenylpyrazole compound or macrolide compound are sustained. The synergist is not particularly limited, but for example, those belonging to inhibitors of microsomal complex oxidase that perform metabolic culture in the body of the pest are preferable.

[0024] Examples of the synergist include, for example, piperonyl butoxide (5-[[2-(2-butoxyethoxy)ethoxy]methyl]-6-propyl-1,3-benzodioxole), sesamin, sesamolin, sesamex, propyl isom, safroxan, sulfoxide, piperonyl cyclonene, N-(2-ethyl)hexyl-5,6-norbornenedicarboximide, 2,2’,3,3,3,3’,3’,3’-octachlorodipropyl ether, O-proparyl-O-propyl phenylphosphonate, and the like. Particularly, piperonyl butoxide is preferable. Regarding these synergists, only one kind may be used, or two or more kinds may be used in combination.

[0025] An insect growth regulator may be added to the agent of the present invention. By using an insect growth regulator, even if there are pests resistant to a pyrethroid compound, a macrolide compound, or a phenylpyrazole compound, their growth can be suppressed, reproduction can be suppressed, and the number of pests can be reduced over time. The insect growth regulator is not particularly limited, and examples thereof include those belonging to juvenile hormone-like substances or chitin synthesis inhibitors.

[0026] Examples of the insect growth regulator include, for example, pyriproxyfen, S-methoprene, hydroprene, phenoxycarb, etoxazole, chlorfluazuron, flucazuron, triazuron, novaluron, hexaflumuron, diflubenzuron, silafluofen, flufenoxuron, teflubenzuron, triflumuron, flucycloxuron, hydroprene, lufenuron, noviflumuron, bistrifluron, and the like. Particularly, pyriproxyfen and S-methoprene are preferable. Regarding these insect growth regulators, only one kind may be used, or two or more kinds may be used in combination.

[0027] In addition, a natural essential oil component may be added to the agent of the present invention. The natural essential oil component is a volatile oily substance obtained from the branches, leaves, roots, rhizomes, bark, fruits, flowers, flower buds, resins, etc. of plants, and is a compound obtained by separating and purifying each part of the plant by steam distillation, pressing, extraction, etc.

[0028] While various ingredients can be used as raw materials for essential oils, grapefruit, geranium, rosemary, anise, armoise, ylang-ylang, orange, cananga, chamomile, cardamom, cajeput, clary sage, clove, coriander, cypress, sandalwood, cedarwood, citronella, juniper berry, ginger, spearmint, sage, tea tree, nutmeg, neroli, pine needle, basil, patchouli, palmarosa, fennel, black pepper, petitgrain, vetiver, peppermint, bergamot, marjoram, mandarin, eucalyptus lemon, lime, lavender, lemon, lemongrass, rosewood, ginger lily leaf oil, cinnamon oil, and peppermint oil are preferred. Essential oils obtained from these raw materials have a useful repellent effect against pests. Furthermore, because essential oils contain various volatile compounds, when the scent of the essential oil disappears, the user can sense a significant decrease in the pest control effect through their sense of smell, making it easy to grasp the pest control effect, which is difficult to perceive visually.

[0029] Furthermore, the agent of the present invention may contain a fragrance that can be detected by the user's sense of smell. It is even more preferable that the fragrance has a vapor pressure at a predetermined temperature that is the same as or within a range of ±20% of the vapor pressure of the pyrethroid compound, macrolide compound, or phenylpyrazole compound or essential oil used. By using a fragrance, the user can sense through their sense of smell that the control effect has significantly decreased when the scent of the fragrance disappears, making it easy to grasp the control effect, which is difficult to perceive visually. In particular, when using pyrethroid compounds, macrolide compounds, or phenylpyrazole compounds or essential oils that are difficult for the user's sense of smell to detect, the control effect can be easily grasped by incorporating a fragrance.

[0030] The container 1 in the present invention is a component for containing the above-mentioned drug, and as shown in Figures 1 and 2, it comprises a cut-out piece 11, a nozzle portion 13, a shoulder portion 14, a container body 16, and the like. These components are formed from a polyolefin resin, and more specifically, it is preferable that they are formed from polyethylene (PE), polypropylene (PP), etc. When these components are formed from a polyolefin resin, even when the amount of a predetermined drug to be filled is small and the distortion of the container body is large, when alcohol or medium-chain fatty acid triglycerides are used as the solvent for the drug, the container body will not deform or the drug will not seep out, and less of the drug will remain in the container when the drug is dispensed.

[0031] The cut-off piece 11 is a component that is cut off when using the animal pest control device of the present invention. By cutting off the cut-off piece 11 at or near the constricted portion 12, which narrows at the boundary between the cut-off piece 11 and the nozzle portion 13, the chemical contained in the container 1 can be discharged from the constricted portion 12 side, which is the tip of the nozzle portion 13. In this embodiment, the cut-off piece 11 has three elongated holes and is a rectangular plate shape with a semi-cylindrical bulge on both sides on the constricted portion 12 side. However, in other embodiments, it can be a disc-shaped, spherical, cylindrical, or prismatic shape, as long as it is cut off at or near the constricted portion 12.

[0032] The nozzle portion 13 is a component with an outer shape that is roughly frustum-shaped, connected to the cut piece 11 via the constricted portion 12. The inside of the nozzle portion 13 is hollow, and as described above, the drug contained in the container 1 can be discharged from the constricted portion 12 side, which is the tip of the nozzle portion 13. In this embodiment, the nozzle portion 13 has the shape of a roughly frustum-shaped cone, but in other embodiments, it can have the shape of a polygonal frustum-shaped pyramid, such as a roughly frustum-shaped square pyramid.

[0033] The shoulder portion 14 is a component with a roughly frustum shape, extending from the nozzle portion 13 and inclined at a larger angle than the nozzle portion 13. As shown in Figures 1 and 2, in the longitudinal direction of the container 1, the shoulder portion 14 is inclined from the nozzle portion 13 to the container body portion 16 at a larger angle than the angle at which the nozzle portion 13 inclins from the constricted portion 12 to the shoulder portion 14. The inside of the shoulder portion 14 is also hollow, and the drug contained in the container 1 flows through the shoulder portion 14 to the nozzle portion 13. In this embodiment, the shoulder portion 14 has a roughly frustum shape, similar to the nozzle portion 13, but in other embodiments, it can be a polygonal frustum shape, such as a square frustum, in conjunction with the shapes of the nozzle portion 13 and the container body 16.

[0034] The container body portion 16 extends from the shoulder portion 14 and is sealed at the sealing portion 15. The filled drug is contained inside the container body portion 16. The sealing portion 15 is a part where, after a predetermined amount of drug has been filled into the container body portion 16, the open end of the container body portion 16 is sealed by methods such as heat welding to create a flat surface to prevent the filled drug from leaking out. The presence of the sealing portion 15 causes the container body portion 16, which was initially roughly cylindrical or rectangular in shape, to deform and become distorted. Furthermore, the thickness of the container body portion 16 is preferably 0.4 to 1 mm in order to prevent the filled drug from leaking out over time.

[0035] The nozzle portion 13, shoulder portion 14, and container body 16 are preferably made of translucent or transparent materials so that the user can easily see whether or not there is any medicine filled inside.

[0036] As shown in Figures 1 and 2, the length L of the container body 16 in the longitudinal direction of the container 1 is preferably 0.5 to 4.0 times, more preferably 0.7 to 3.9 times, and most preferably 0.8 to 3.8 times, the diameter D at the boundary between the shoulder portion 14 and the container body 16. When the length L of the container body 16 is such a ratio to the diameter D, the amount of air inside the container that comes into contact with the chemical filled in the container 1 can be reduced, thereby reducing the oxidation of the chemical, especially the active ingredients for pest control contained therein, and enabling effective pest control even when stored for a long period of time. In this embodiment, the shoulder portion 14 has a roughly frustoconical shape, and the boundary between the shoulder portion 14 and the container body portion 16 is circular, so it is the diameter D. However, in other embodiments, when the shoulder portion 14 has a roughly frustoconical shape, the boundary between the shoulder portion 14 and the container body portion 16 is a polygon such as a quadrilateral, so the length L of the container body portion 16 in the longitudinal direction of the container 1 is the length of the longest diagonal of that polygon. [Examples]

[0037] The following describes in detail the animal pest control device of the present invention. However, the present invention is not limited to the following embodiments.

[0038] [Example 1] As the active ingredient for pest control, 25 g of etofenprox, a pyrethroid compound, was selected, and ethyl diglycol (ethylene glycol monoethyl ether) was selected as the solvent. The pesticide was prepared using an appropriate amount that resulted in 100 ml of pesticide at 25°C. Homopolypropylene (PP), an olefin resin, was used as the material to form the container 1, which has the shape shown in Figures 1 and 2. After filling 2 mL of the prepared pesticide through the open end of the container body 16, which was initially roughly cylindrical, the end was heat-sealed to form a sealing part 15, thereby sealing the pesticide and creating an animal pest control device. At this time, the length L of the container body 16 in the longitudinal direction of the container 1 was twice the diameter of the shoulder portion 14 at the boundary with the container body 16.

[0039] Examples 2 to 7 As shown in Table 1, a predetermined amount of etofenprox, a pyrethroid compound, and selamectin, a macrolide compound, were used as the active ingredients for pest control. Furthermore, predetermined amounts of pyriproxyfen and S-methoprene were also used as insect growth regulators. An appropriate amount of ethyl diglycol (diethylene glycol monoethyl ether), isopropanol, and medium-chain triglyceride was used as the solvent to prepare the pesticide. Then, in the same manner as in Example 1, 2 mL of the prepared pesticide was filled into a container and sealed to produce an animal pest control device. In this case, as in Example 1, the length L of the container body 16 in the longitudinal direction of the container 1 was twice the diameter of the shoulder portion 14 at the boundary with the container body 16. In addition, as the material for forming the container 1, Example 5 was homopolypropylene, as in Example 1; Examples 3, 4, and 6 were random polypropylene, which is a random copolymer polymer obtained by polymerizing propylene as the main raw material with the addition of ethylene; and Example 7 was a mixture of polypropylene and polyethylene kneaded in predetermined proportions.

[0040] [Comparative Example 1] and [Comparative Example 2] As shown in Table 1, the drug was prepared in the same manner as in Example 1. Instead of an olefin resin, nylon was used as the material for forming the container 1, which had the shape shown in Figures 1 and 2. Then, in the same manner as in Example 1, 2 mL of the prepared drug was filled into the container and sealed to produce an animal pest control device. At this time, as in Example 1, the length L of the container body 16 in the longitudinal direction of the container 1 was twice the diameter of the shoulder portion 14 at the boundary with the container body 16.

[0041] Using the animal pest control devices of each example and each comparative example, the stability of the container 1 in terms of deformation over time and leakage from the container 1, as well as the state of the container 1 when sealed in the sealing part 15, were evaluated according to the following method.

[0042] [Stability (deformation)] The animal pest control devices for each example and comparative example were stored for 6 months under harsh conditions of 40°C and 75% RH relative humidity, and the deformation of the container 1, particularly the container body 16, was visually inspected. Containers with no deformation were rated "◎", those with almost no deformation were rated "○", and those with deformation were rated "×". Containers rated "◎" were judged as excellent, those rated "○" as good, and those rated "×" as poor.

[0043] [Stability (seepage)] The animal pest control devices for each example and comparative example were stored for 6 months under harsh conditions of 40°C and 75% RH relative humidity. The surface of container 1, particularly the container body 16, was wiped with a paper cloth and visually inspected. Those with no leakage at all were rated "◎", those with almost no leakage were rated "○", and those with leakage were rated "×". Those rated "◎" were judged as excellent, those rated "○" as good, and those rated "×" as poor.

[0044] [Condition of container 1 when sealed] When the sealing portion 15 was formed, the condition of the container 1 was visually inspected. Containers 1, especially the main body 16, that showed no whitening due to distortion and were properly sealed by the sealing portion 15 were evaluated as "◎", containers 1 that showed some whitening due to distortion but were properly sealed by the sealing portion 15 were evaluated as "○", and containers that were not properly sealed by the sealing portion 15 were evaluated as "×". At this time, those evaluated as "◎" were judged as excellent, those evaluated as "○" as good, and those evaluated as "×" as poor.

[0045] In these evaluations, both the stability regarding deformation of container 1 over time and leakage from container 1, and the state of container 1 when sealed in the sealing part 15, were judged to be desirable examples if they received an "◎" or "○" rating, and any example with even one "×" rating was judged to be an undesirable example.

[0046] Table 1 shows the formulations for each example and comparative example, as well as the results of their evaluation.

[0047] [Table 1]

[0048] As shown in Table 1, when the container 1 is made of polyethylene (PE) or polypropylene (PP), which are polyolefin resins, it was found that even when the distortion of the container body 16 is large, the container 1, especially the container body 16, does not deform and the drug does not leak out when alcohol or medium-chain fatty acid triglycerides are used as solvents for the drug. This confirms its usefulness, as it can be used without change even when stored for a long period of time. [Explanation of symbols]

[0049] 1...container 11...cut piece 12. Waist area 13. Nozzle section 14...Shoulder 15. Sealing section 16. Container body L...Length of the container body D...Diameter at the boundary between the shoulder portion and the main body of the container.

Claims

1. A pesticide containing an active ingredient for pest control and at least one solvent selected from alcohol and medium-chain triglyceride fatty acids, A container comprising a cut-off piece to be cut off at the time of use, a substantially frustoconical nozzle portion connected to the cut-off piece via a constricted portion, a substantially frustoconical shoulder portion extending from the nozzle portion and inclined at a larger angle than the nozzle portion, and a container body portion extending from the shoulder portion and sealed at a sealing portion, wherein the container is made of polyolefin resin and contains the drug, An animal pest control device characterized in that the length of the container body is 0.5 to 4.0 times the diameter or the length of the longest diagonal at the boundary between the shoulder portion and the container body.

2. The animal pest control device according to claim 1, characterized in that the thickness of the container body is 0.4 to 1 mm.

3. The animal pest control device according to claim 1 or 2, characterized in that the aforementioned pest control active ingredient is at least one compound selected from pyrethroid compounds or macrolide compounds.

4. The animal pest control device according to claim 1 or 2, characterized in that the medium-chain fatty acid triglyceride is an ester compound produced from a fatty acid having 8 to 10 carbon atoms and glycerol.

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