Original state recovery method and harmful animal extermination method

Abstract

To facilitate collection of a bait agent remaining after harmful animal extermination, improve a collection rate, and prevent a damage to other animals.SOLUTION: After harmful animal extermination by causing a harmful animal to eat a bait agent 2 containing fluorescent dye, the bait agent 2 is searched for by emitting light of a wavelength of causing the fluorescent dye to emit light, and the found bait agent 2 is collected.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a restoration method and a pest extermination method for restoring an area to its original state after exterminating pests such as rats with a bait. [Background technology]

[0002] For example, baits (poison baits) are used to exterminate harmful animals such as rats. This type of bait comes in two types: one that is eaten immediately after being placed (see Patent Document 1, for example), and one that is taken back to the nest and eaten (see Patent Document 2, for example). The type that is taken back to the nest is efficient in that it can be shared with other nestmates and can exterminate the entire nest.

[0003] There is also a known technology for total control of harmful animals by blending fluorescent agents into bait (see, for example, Patent Document 3). Patent Document 3 claims that by shining a black light on the excrement of harmful animals that have eaten the bait, it is possible to track the harmful animals and to more accurately place the bait, making it possible to adopt appropriate measures at any time. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Publication number 2-006793 [Patent Document 2] Japanese Patent Application Publication No. 2019-140928 [Patent Document 3] Japanese Patent Application Laid-Open No. 2002-020201 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when baits are placed, it is necessary to prevent accidental contact with the baits by animals other than the target pests (for example, small children, pets, livestock, wild animals, etc.). Therefore, after the pests have been exterminated, it is preferable to quickly collect the baits that the pests have eaten and scattered and restore the area to its original state.

[0006] However, for example, mouse baits are often placed in dark spaces, making it difficult to recover all of the bait that has been eaten. In particular, there is a problem with the type of bait that is carried back to the nest, which makes it virtually impossible to find and recover.

[0007] The present disclosure has been made in consideration of these points, and its purpose is to facilitate the recovery of bait remaining after the extermination of pests, improve the recovery rate, and ultimately prevent damage to other animals. [Means for solving the problem]

[0008] Methods for achieving the above-mentioned object include a restoration method in which a bait containing a fluorescent dye is ingested by a pest, and after the pest is exterminated, the bait is searched for by irradiating it with light of a wavelength that causes the fluorescent dye to emit light, and the bait is recovered.

[0009] According to this method, by using a black light or the like, it is possible to find small baits that are difficult to see with visible light, making it easier to recover the baits and improving the recovery rate.

[0010] In addition, the above object can also be achieved by a restoration method in which bait containing a fluorescent dye is brought back to the nest by pests and eaten, and after the pests have been exterminated, light of a wavelength that causes the fluorescent dye to emit light is irradiated onto the nest and its surrounding area to search for the bait, and the bait is then recovered.

[0011] In other words, by having the bait return to the nest, the entire nest can be eradicated, improving extermination efficiency, but on the other hand, it becomes difficult to determine where the bait is being carried, its location and route, which may reduce the recovery rate of remaining bait.In contrast, with this method, by using, for example, a black light, it is possible to search for bait that has been brought back to the nest, making it easier to recover the bait and improving the recovery rate.

[0012] The method for exterminating pests may also include a preparation step of preparing a bait containing a fluorescent dye, an extermination step of having pests bring the bait prepared in the preparation step back to their nests and eat it, thereby exterminating the pests, a search step of irradiating the nests and their surrounding areas with light of a wavelength that causes the fluorescent dye to emit light after the extermination step to search for the bait, and a recovery step of recovering the bait found in the search step. This method also makes it easier to recover the bait and improves the recovery rate.

[0013] The preparation step may include preparing the bait in a bag, which allows the bait to be carried back to the nest and also makes it easier to restore the bait to its original state because the bait is not scattered unnecessarily while being carried back to the nest.

[0014] In the preparation step, the bait may be placed in a light-transmitting bag, which allows the bait remaining in the bag to be visually confirmed from the outside by shining a black light, for example, from outside the bag, thereby further improving the recovery rate of the bait.

[0015] In the preparation step, the bait may be placed in a bag containing a fluorescent dye, which allows the bag to be visualized using, for example, a black light, thereby further improving the recovery rate of the bait if any bait remains in the bag.

[0016] It is also possible to use light of the wavelength to search for and collect excrement excreted by pests after ingesting the bait. Alternatively, pests may be fed the bait containing a second-generation anticoagulant as an active extermination ingredient. In other words, since the second-generation anticoagulant may be excreted undigested by pests, there is a possibility that it may cause secondary toxicity to other animals that come into contact with the excrement. Therefore, secondary damage can be prevented by searching for and collecting the excrement using, for example, a black light. [Effects of the Invention]

[0017] As explained above, the bait remaining after exterminating harmful animals can be easily collected, the collection rate can be improved, and damage to other animals can be prevented. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a perspective view of a rodent control product according to an embodiment of the present invention; [Figure 2] FIG. 1 shows bait scattered on the floor of a test room emitting light. [Figure 3] FIG. 10 is a diagram showing the bait remaining on a concrete block placed in a test room emitting light. [Figure 4] FIG. 10 is a diagram showing the traces of urine excreted in a test chamber emitting light. [Figure 5] FIG. 10 is a diagram showing the luminescence of the corpse of a test animal with urine on it. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note 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.

[0020] FIG. 1 is a perspective view of a rodent control product 1 according to an embodiment of the present invention. The rodent control product 1 includes a bait 2 and a bag 3 for storing the bait 2. The bait 2 contains a fluorescent dye and an active extermination ingredient, and the active extermination ingredient is a poison for killing vermin. Therefore, the bait 2 can also be called a poison bait. Target vermin include, for example, rodents, but other vermin may also be targeted. The rodent control product 1 may be composed solely of the bait 2. If other vermin are targeted, the product can also be called a pest control product.

[0021] The fluorescent dye is not particularly limited as long as it emits light when irradiated with, for example, black light (long-wavelength ultraviolet light with a dominant wavelength of 300 nm to 400 nm). The color of the emitted light is not particularly limited and may be any color such as red, pink, white, green, yellow, blue, or purple, or may be a mixed color of two or more of these colors.

[0022] The fluorescent dye can be supported on an organic or inorganic powder, or dispersed in a dispersant and then added to the bait 2. The fluorescent dye content can be set at will, but from the viewpoint of obtaining a sufficient amount of light when searching with a black light and not repelling or alarming pests, it is preferably set in the range of 0.0001% by mass to 10% by weight, or 0.001% by mass to 5% by weight.

[0023] The type of exterminating active ingredient is not particularly limited, but examples include warfarin, coumatetralyl, chlorophacinone, bromadiolone, diphacinone, boric acid, zinc phosphide, etc., and any one of these may be contained alone, or any two or more may be contained in combination.

[0024] These active ingredients are available in both fast-acting and slow-acting varieties. In the case of baits that are brought back to the nest, a slow-acting one is preferable, as it allows nestmates to consume the bait without becoming suspicious. Examples of active ingredients with these characteristics include "anticoagulants" (anticoagulant rodenticides), such as warfarin. Anticoagulants are divided into first- and second-generation types. First-generation anticoagulants include coumarin compounds such as warfarin, coumachlor, coumafuryl, and coumatetralyl, and indadione compounds such as pindone, diphacinone, and chlorophacinone. Second-generation anticoagulants include difenacoum, bromadiolone, brodifacoum, flocoumafen, and difethialone. Active ingredients may also contain second-generation anticoagulants. Second-generation anticoagulants are said to have a longer half-life and are often excreted undigested by pests.

[0025] The active ingredient for extermination is not limited to the slow-acting active ingredient described above, but may also be an active ingredient with immediate action, such as zinc phosphide.

[0026] The amount of the active ingredient varies depending on the type of active ingredient and the type of pest, but can be set anywhere between the minimum concentration that maintains effectiveness and the maximum concentration that exhibits repellency. At least one selected from the above compounds and / or their isomers and / or analogs can also be used as needed. Other pesticides, natural essential oils, synergists, bait substances, etc. can be mixed in any ratio to form a combination.

[0027] The bait 2 may contain a food substance. The food substance may be processed, artificial, or natural. Examples of the food substance include vegetable substances such as starch and starch hydrolysates from corn, potato, sweet potato, etc., wheat flour, rice flour, soybean flour, peanut flour, sesame flour, vegetable flour, bran, and vegetable protein. Examples of the animal substances include pupa meal, fish meal, milk, animal protein, feed yeast, and various amino acids. Examples of the carbohydrates include fructose, glucose, brown sugar, brown sugar, brown sugar, granulated sugar, honey, and sugarcane juice. Examples of the lipids include various vegetable oils and animal oils and fats, such as sesame oil, rice bran oil, palm oil, corn oil, peanut oil, butter, egg oil, and whale oil. The above food substances can be freely and arbitrarily mixed and blended.

[0028] Bait 2 may further contain various additives, whether processed, artificial, or natural, such as attractants, feeding stimulants, water retention agents, preservatives (including sterilization and antifungal agents), antioxidants, bulking agents, agents to prevent accidental ingestion, preservatives, fragrances, and colorings, depending on the preference of pests, and there are no particular restrictions on the composition, selection, and mixing of these additives.

[0029] The formulation of the bait 2 is not particularly limited and may be in the form of a paste, tablet, pellet, block, gel, powder, granule, semi-solid, liquid, etc., and the hardness, softness, size, surface condition, etc. can be set as desired. In this embodiment, the bait 2 is in the form of a paste.

[0030] The bait 2 may be placed in any manner, and may be simply placed on a plate or the like, but in this embodiment, the bait 2 is contained in a bag 3. The bag 3 is translucent, allowing light of the wavelength irradiated by the black light and visible light to pass through. Such a bag 3 may be made of, for example, a resin film, a resin sheet, paper, or cloth (including nonwoven fabric), and may be transparent, milky white, white, or lightly colored.

[0031] The bag 3 contains a fluorescent dye. The fluorescent dye may be kneaded into the material that constitutes the bag 3, or may be supported on the material. Alternatively, a paint containing the fluorescent dye may be applied to the bag 3, in which case the bag 3 also contains the fluorescent dye. The fluorescent dye may be contained in the entire bag 3, or may be contained in only a part of the bag 3, with no fluorescent dye in other parts. The bag 3 does not have to contain the fluorescent dye.

[0032] The shape of the bag 3 can be, for example, elongated. By making the bag 3 elongated, the mouse can easily pull the bag 3 from the burrow into the inside of the nest with part of the bag 3 in it. The shape of the bag 3 is not limited to elongated, and can be any shape, such as square or circle.

[0033] (Methods for exterminating pests and restoring the area to its original state) Next, we will explain a method for exterminating vermin using the rodent control product 1, and a method for restoring the area to its original state after exterminating the vermin. The first step in the vermin extermination method is a preparation step in which a bait 2 containing a fluorescent dye is prepared. In the preparation step, the rodent control product 1 is prepared and placed in a location where rats are likely to appear. Next, we will explain an extermination step in which the bait 2 prepared in the preparation step is carried back to the vermin's nest and eaten, thereby exterminating the vermin. In the extermination step, the bait 2 may be eaten by the vermin at or near the location where it was placed, without being carried back to the nest.

[0034] The extermination process continues for a predetermined period of time after the preparation process, and may be, for example, several hours, several days, or several weeks. Additional rodent control products 1 may be installed during the extermination process. Furthermore, during the extermination process, rodent control products 1 may be installed in locations other than those installed during the preparation process.

[0035] After the extermination process is completed, a search process is carried out in which light of a wavelength that causes the fluorescent dye to emit light is irradiated onto the nest and its surrounding area to search for the bait 2. When carrying out the search process, the search area is kept dark so that almost no visible light reaches the search area. The light of a wavelength that causes the fluorescent dye to emit light can be, for example, light emitted from a black light. The black light that can be used in this case may be a conventional, commercially available product, or a product developed specifically for this method. The black light may be one that emits light using power supplied from a commercial power source, or one that emits light using power supplied from a dry cell battery or secondary battery.

[0036] If bait 2 is present within the area illuminated by the black light, only that bait 2 will glow, allowing workers to visually identify where bait 2 is present. Furthermore, the light is stronger in areas where bait 2 is present in clusters, allowing workers to visually identify areas where bait 2 is present in large quantities. Furthermore, even small amounts of fluorescent dye will glow, allowing for visual detection of even small amounts of bait 2. By illuminating the black light in this way, bait 2 can be searched for. When illuminating the black light, the black light is not only used in the room where bait 2 was placed during the preparation process, but also in the surrounding area, other rooms, and outdoors to search for bait 2. This makes it possible to identify rat movement routes and rat nests. If a nest is discovered, the black light is shone on the nest and its surrounding area. Furthermore, if the nest has been identified in advance, the black light is also shone on the nest and its surrounding area.

[0037] Thereafter, a recovery step is carried out to recover the bait agent 2 found in the search step. When recovering the bait agent 2, for example, it may be swept up using a cleaning tool such as a broom and collected in a collection container, or it may be collected by adhering it to adhesive tape or the like, or it may be collected by wiping it off. After collection, a confirmation step may be added in which black light is irradiated again to check whether any bait agent remains.

[0038] Restoration to the original state is possible by searching for the bait 2 and recovering the found bait 2. The search step and recovery step constitute a restoration method. The restoration method may also include the above-mentioned confirmation step.

[0039] Since the bag 3 contains a fluorescent dye, the bag 3 can also be seen during the search process. Even if most of the bait 2 has been eaten, the bag 3 often remains. If the bag 3 can be seen, it becomes possible to identify the surrounding area as a nest, and carcasses and excrement, for example, can also be collected. Furthermore, if bait 2 remains inside the bag 3, the bait 2 can also be collected, improving the recovery rate. If the bag 3 has been torn apart by the rat, fragments of the bag 3 can also be collected.

[0040] Furthermore, since the excrement excreted by pests after ingesting the bait may also contain fluorescent dyes, the excrement excreted by pests after ingesting the bait 2 may be searched for using a black light. The searched excrement is collected in the same manner as the collection process described above. That is, in this embodiment, a second-generation anticoagulant is contained as the active extermination ingredient, and since the second-generation anticoagulant may be excreted undigested by pests, there is a possibility that it may cause secondary toxicity to other animals that come into contact with the excrement. Therefore, by searching for and collecting the excrement using, for example, a black light, it is possible to prevent secondary damage.

[0041] Furthermore, if the bait 2 contains a fast-acting active ingredient, such an active ingredient is highly toxic, so it is desirable to recover the remaining bait 2 quickly and with a high recovery rate. In this case, the pest control method and restoration method according to this embodiment are also effective.

[0042] As described above, the excrement excreted by harmful animals that have eaten the bait 2 can be collected, and therefore the present invention can also be called an excrement collection method.

[0043] (Test example) Next, a test example will be described. The test agent is a fluorescent dye-containing bait 2 contained in a bag 3, as shown in Figure 1. Commercially available test agents may also be used. The test animals are mice. The test room is a windless, temperature-controlled room measuring 8 tatami mats. Water is placed in the center of the test room, and two concrete blocks are also placed there to serve as habitats. Four mice are released into the test room, and four packets of the test agent are placed inside. After one week, the test room is entered in the dark, and a black light is shone on the room, and any luminous material is collected. The collected material includes remains of the bait 2 and excrement (feces).

[0044] Figure 2 is a photograph taken with a camera of the floor of the test room illuminated with black light. It can be seen that many baits 2 and feces scattered on the floor of the test room are luminescent, and the white objects in the image are baits 2 and feces containing fluorescent dyes. Figure 3 is a similar photograph to Figure 2, showing the luminescence of bait 2 remaining in the concrete blocks that serve as habitats. Since the luminescence extends not only from the surface of the concrete blocks but also into the holes, it is easy to see that bait 2 is present inside the holes. If one were to try to search for bait 2 using only visible light, it would be difficult to find bait 2 even if it was present inside the holes in the concrete blocks, as it is dark inside the blocks.

[0045] Figure 4 is a photograph similar to Figure 2, showing the glowing traces of urine excreted in the test chamber, with the linear glow being the urine trace. Figure 5 also shows the glowing traces of the dead animal with urine on it. Because urine also contains fluorescent dyes, it is possible to clearly distinguish the areas with urine on them from other areas.

[0046] In the test, after collecting all objects that glowed in the dark (excluding carcasses, concrete blocks, urine stains, etc.), the room was illuminated with visible light and the remaining bait 2 and feces were collected within the visible range. This test was conducted twice.

[0047] The recovery rate of the test agent was 99.6% on average over two runs. In other words, by using a black light even in the dark, only 0.4% of the samples were missed. These results demonstrate that by irradiating the black light in the dark, recovery rates comparable to those achieved under visible light can be achieved. For example, under visible light, if bait 2 is dropped on a substrate that appears the same color as bait 2, there is a risk of bait 2 not being recovered. However, by irradiating the black light in the dark, only bait 2 appears to glow, eliminating missed recovery even in such cases.

[0048] The feces recovery rate was 35.3% on average over two runs, meaning that more than 30% of the feces could be recovered even in the dark. The reason the feces recovery rate was lower than that of Bait 2 is because not all feces contain fluorescent dye. Furthermore, feces that do not contain Bait 2 are not toxic, so even if they are not recovered, they do not cause harm to other animals and are not a particular problem.

[0049] In the dark, urine stains illuminated by a black light also glowed. Since it is difficult to determine whether or not urine is present even under visible light, being able to see urine by shining a black light on it is effective in preventing harm to other animals. If urine stains are found, they can simply be wiped off.

[0050] (Effects of the embodiment) As described above, according to this embodiment, the bait 2 containing the fluorescent dye is ingested by pests, and after the pests are exterminated, the bait 2 can be searched for in the dark using a black light, and the bait 2 can be recovered. Furthermore, if the fluorescent dye is also contained in the excrement of the pests, the excrement can also be searched for and recovered at the same time. Therefore, the recovery of the bait 2 and excrement remaining after the extermination of the pests can be easily performed, the recovery rate can be improved, and damage to other animals can be prevented.

[0051] The above-described embodiments are merely examples in all respects and should not be construed as limiting. Furthermore, all modifications and variations within the scope of the claims are within the scope of the present invention. [Industrial Applicability]

[0052] As described above, the present invention can be used, for example, to exterminate rats. [Explanation of symbols]

[0053] 1. Rodent control products 2 Bait 3 bags

Claims

1. This method for restoring the area to its original state comprises feeding harmful animals with a bait containing a fluorescent dye, exterminating the harmful animals, irradiating the harmful animals with light of a wavelength that causes the fluorescent dye to emit light, searching for the bait, and recovering the bait that has been found.

2. This method for restoring the state to its original state comprises the steps of causing harmful animals to carry a bait containing a fluorescent dye back to their nest and eat it, exterminating the harmful animals, irradiating the nest and its surroundings with light of a wavelength that causes the fluorescent dye to emit light, searching for the bait, and recovering the bait that has been found.

3. a preparation step of preparing a bait agent containing a fluorescent dye; an extermination step of exterminating harmful animals by having harmful animals carry the bait agent prepared in the preparation step back to their nests and eat it; a searching step of searching for the bait by irradiating a nest and its surroundings with light of a wavelength that causes the fluorescent dye to emit light after the extermination step; A pest control method characterized by comprising a recovery step of recovering the bait agent found in the search step.

4. The pest control method according to claim 3, A pest control method, characterized in that the preparation step includes preparing the bait agent contained in a bag.

5. The pest control method according to claim 4, A pest control method characterized in that in the preparation step, the bait is placed in the light-transmitting bag.

6. The pest control method according to claim 3, A pest control method, characterized in that in the preparation step, the bait is placed in the bag containing a fluorescent dye.

7. The restoration method according to claim 1 or 2, A restoration method for an area to its original state, characterized in that excrement excreted by harmful animals after ingesting the bait is searched for and collected using light of the wavelength.

8. The restoration method according to claim 1 or 2, A method for restoring a pest to its original state, comprising feeding the bait containing a second-generation anticoagulant as an active ingredient to the pest.

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