Porous powder, harmful arthropod killer, and harmful arthropod killing method

Abstract

To provide a method for killing harmful arthropods by which labor for recovering porous powder and dead bodies of the harmful arthropods after jetting from an object such as a bed, health damage caused by dust of the unrecovered porous powder and cost accompanying exchange of each carpet at a fixed frequency are reduced.SOLUTION: The method for killing harmful arthropods includes a sheet-like holding member 2 for holding diatomaceous earth powder 6, wherein the holding member 2 has fibers for holding the diatomaceous earth powder 6 on the surface or has an adhesive substance for attaching and holding the diatomaceous earth powder 6, a container 4 for holding an attracting liquid for attracting harmful arthropods by vaporizing around the holding member 2, and a carbon dioxide generator 5 for generating carbon dioxide around the holding member 2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a porous powder for killing arthropod pests, a pest killing device, and a method for killing arthropod pests. [Background technology]

[0002] Among arthropods present in homes and accommodation facilities, there are harmful ones that cause bites and stings to humans, such as bedbugs, mites, fleas, centipedes, and ants.

[0003] For example, bed bugs, also known as bed bugs, inhabit beds and futons, but also hide in other places, such as under carpets and rugs, in gaps between tatami mats and walls, behind and in the seams of furniture drawers, in the folds of curtains, in the seams of clothing, and inside books. Bed bugs are primarily active in dark places and are known to feed on animals, including dogs and cats, as well as humans. When feeding, bed bugs inject saliva, which has a protein-clotting effect, into their target, causing swelling, itching, and allergic reactions. Depending on the severity of these symptoms, these can cause insomnia and other adverse effects. Furthermore, bed bugs are known to be resistant to starvation and can sometimes survive long periods without food. Furthermore, because they hide in crevices during the day, their hiding places are difficult to find. Once an infestation occurs, complete eradication is difficult, making it difficult to maintain a clean environment in homes and accommodations, which can even cause reputational damage in the case of accommodations.

[0004] A known method for exterminating bed bugs is one that uses porous powder such as diatomaceous earth (see, for example, Patent Documents 1 and 2). This method involves scattering the porous powder on a target area such as a bed, and killing the bed bugs by bringing the porous powder into contact with them. When bed bugs come into contact with the porous powder, the porous powder absorbs the wax layer that covers the bed bug's exoskeleton, causing the surface barrier function to disappear. This makes it difficult for the bed bug to retain moisture in its body, leading to dehydration and death. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Special table number 2015-500634 [Patent Document 2] Special table number 2017-529892 Summary of the Invention [Problem to be solved by the invention]

[0006] Patent Document 1 discloses a method of spraying diatomaceous earth as a porous powder onto the surface of furniture such as beds using a compressed propellant to suppress populations of bed bugs and other arthropods. The disclosure shows that by mixing diatomaceous earth with a propellant, it is possible to spray diatomaceous earth more evenly onto the surface than with conventional methods, resulting in more effective bed bug extermination. However, because diatomaceous earth and dead bed bugs remain on the sprayed surface, the diatomaceous earth and dead bed bugs must be collected after spraying, which is time-consuming. Furthermore, because the particle size of diatomaceous earth is so fine, it may not be possible to completely collect it even with a vacuum cleaner, and there are concerns about health hazards caused by the dust.

[0007] Patent Document 2 discloses a surface fiber treatment with a pesticide containing diatomaceous earth, borax, silicon dioxide, etc., and carpets, carpet tiles, rugs, and flooring systems prepared using the treatment, as well as a method for applying the treatment. The disclosure shows that the surface fibers of carpets, etc. are treated by spraying or foaming with an aqueous suspension or solution of the pesticide, but it is known that the surface-treated silicon dioxide wears away when the carpet is vacuumed or washed, and it is thought that in order to achieve a pest control effect, it will be necessary to replace each carpet at a certain frequency, which is thought to be a significant cost burden.

[0008] One object of the present invention is to kill arthropod pests in a simple manner without using chemicals. Another object of the present invention is to keep the target object clean and harmless without leaving any porous powder or arthropod pests on or around the target object after killing. A further object of the present invention is to kill arthropod pests economically without the need to replace the target object itself. [Means for solving the problem]

[0009] (1) A method for killing arthropod pests according to one embodiment of the present invention includes spraying a porous powder onto the body surface of the pests, thereby killing the pests. This method allows pests to be killed simply by spraying the porous powder onto the target area, without using chemicals.

[0010] (2) One embodiment of the porous powder of the present invention is a porous powder to be sprayed on a target area to kill harmful arthropods, and is colored a color that has an attractive effect on the harmful arthropods and is different from the color of the target area. This configuration enhances the attractive effect on harmful arthropods, and since the porous powder is colored a color different from the target area, it is possible to prevent missed spraying or missed collection of the porous powder after use, thereby enabling effective spraying and collection.

[0011] (3) One embodiment of the present invention provides a pest killing device comprising a porous powder and a sheet-like holding member that holds the porous powder. This configuration allows the pest killing device to be easily used at home, etc., by placing it on or near a target object such as a bed, without the need for chemicals, and allows for the capture and killing of pests living in the target object. Specifically, the porous powder held by the holding member adheres to the body surface of the pest, piercing the exoskeleton of the pest and slowing its movement. The porous powder that adheres to the body surface of the pest absorbs the wax layer on the pest's body surface and absorbs the pest's moisture, eventually leading to the death of the pest. In the above configuration, since the porous powder is not scattered on the target object itself, after killing the captured pests, the porous powder and the killed pests can be disposed of together with the holding member, so that the porous powder and the killed pests do not remain on the target object or its surroundings, and the target object can be kept clean and harmless. Furthermore, since the porous powder is not scattered on the target object itself, there is no need to replace the target object itself, which is economical.

[0012] (4) In the pest killing device of (3), the holding member may have a color that has an attractive effect on the pests. This configuration enhances the attraction effect on the pests.

[0013] (5) In the device for killing arthropod pests according to (3) or (4), the porous powder may be a powder of diatomaceous earth, silica, or zeolite. This configuration allows the wax layer on the body surface of arthropod pests to be effectively absorbed.

[0014] (6) In the pest killing device according to any one of (3) to (5), the holding member may have fibers on its surface that hold the porous powder. With this configuration, the porous powder is entangled in the fibers and effectively held by the holding member.

[0015] (7) In the pest killing device according to any one of (3) to (5), the holding member may be provided with an adhesive substance that adheres and holds the porous powder on the surface of the holding member. With this configuration, the porous powder adheres to the surface of the holding member and is effectively held by the holding member.

[0016] (8) The pest killing device according to any one of (3) to (7) may further include an attractant liquid that vaporizes around the holding member to attract the pests, and a container for holding the attractant liquid. With this configuration, the attractant liquid vaporizes to generate an odor that attracts pests to the holding member.

[0017] (9) The pest killing device according to any one of (3) to (8) may further include a carbon dioxide generator that generates carbon dioxide around the holding member. With this configuration, pests can be attracted to the holding member.

[0018] (10) A method for killing pests according to one embodiment of the present invention includes the steps of scattering and retaining porous powder on a sheet-like retaining member and placing the retaining member retaining the porous powder on or near a target object. This configuration allows for the capture and killing of pests living in the target object. Specifically, the porous powder retained on the retaining member adheres to the body surface of the pest, piercing the pest's exoskeleton and slowing its movement. The porous powder adhering to the body surface of the pest absorbs the wax layer on the pest's body surface and absorbs the pest's moisture, eventually leading to the death of the pest. Since the above configuration does not scatter porous powder on the target object itself, after killing the captured pest, the porous powder and the killed pest can be disposed of together with the retaining member, eliminating the need for porous powder or the killed pest on or near the target object, thereby maintaining the target clean and harmless. Furthermore, since the porous powder is not scattered on the object itself, there is no need to replace the object itself, which is economical.

[0019] (11) The method for killing arthropod pests according to (10) may further include a step of vaporizing an attractant liquid that attracts arthropod pests around the holding member. With this configuration, the attractant liquid vaporizes to generate an odor that attracts arthropod pests to the holding member.

[0020] (12) The method for killing arthropod pests according to either (10) or (11) may further include a step of generating carbon dioxide around the holding member. This configuration can attract arthropod pests to the holding member.

[0021] Other aspects and features of the present invention will become apparent to those skilled in the art upon consideration of the following description of exemplary embodiments. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a perspective view of an arthropod pest killer according to one exemplary embodiment; FIG. DETAILED DESCRIPTION OF THE INVENTION

[0023] However, the embodiments described below are merely examples, and the present invention is not limited to the embodiments described below. Furthermore, elements of multiple embodiments can be combined in any manner.

[0024] In this embodiment, bed bugs are killed by scattering diatomaceous earth powder as a porous powder and allowing the diatomaceous earth powder to adhere to the body surfaces of pest arthropods. This configuration allows bed bugs to be killed by the simple method of simply scattering diatomaceous earth powder on the target area without using chemicals.

[0025] Diatomaceous earth powder is originally white, but may be colored to attract bed bugs. Since bed bugs are known to prefer red and black, the diatomaceous earth powder 6 may be colored red or black. The diatomaceous earth powder may also be colored a color different from the color of the target area to which it is to be sprayed. Different colored diatomaceous earths, such as white, red, or black, may be used depending on the color of the target area. For example, if the target area to be sprayed is light-colored, black-colored diatomaceous earth powder may be used, and if the target area to be sprayed is dark-colored, white diatomaceous earth powder may be used without coloring.

[0026] Furthermore, instead of coloring the diatomaceous earth powder, granules of a color that has an attractive effect may be mixed into the diatomaceous earth powder.Furthermore, in terms of water absorption, it is preferable to select a non-aqueous paint rather than a water-based paint to color the diatomaceous earth powder.

[0027] (harmful arthropod killing device) 1 is a perspective view of an arthropod pest killing device according to one exemplary embodiment. The arthropod pest killing device 1 includes diatomaceous earth powder 6 as a porous powder and a sheet-like holding member 2 that holds the diatomaceous earth powder 6. The diatomaceous earth powder 6 may be held in the holding member during the manufacturing process of the arthropod pest killing device 1, or the diatomaceous earth powder 6 and the holding member 2 may be sold separately, and the diatomaceous earth powder 6 may be held in the holding member 2 by sprinkling the diatomaceous earth powder 6 on the holding member 2 at the time of use.

[0028] The more the amount of diatomaceous earth powder 6, the better. However, if it is too much, the amount of diatomaceous earth powder 6 that scatters increases and the cost also increases. Therefore, for example, 4 g to 8 g / m 2The diatomaceous earth powder 6 may be spread on the holding member 2 at a density of about 1 / 4 of that amount and held thereon. When spreading the diatomaceous earth powder 6 on the holding member 2, the diatomaceous earth powder 6 may be spread by brushing it onto the holding member 2, or the diatomaceous earth terminals 6 may be sieved from above the holding member 2 and spread onto the holding member 2 by spreading it. Alternatively, the diatomaceous earth powder 6 may be mixed with a liquid such as alcohol and sprayed onto the holding member 2. Note that inhaling the dust of the diatomaceous earth powder 6 can have adverse health effects, so it is advisable to wear a dust mask when handling the diatomaceous earth powder 6.

[0029] The average particle size of the diatomaceous earth powder 6 is preferably 3 μm or more and 5 μm or less. If the diatomaceous earth powder 6 is too small, it will not be retained by the retaining member 2 and will tend to turn into dust, and if it is too large, it will not easily adhere to bed bugs. However, if the average particle size is 3 μm or more and 5 μm or less, the diatomaceous earth powder 6 will be retained by the retaining member 2 and will also easily adhere to bed bugs.

[0030] Figure 1 shows the harmful arthropod killing device 1 in a state where it is placed parallel to the ground and is used by placing it on the floor, but it may also be placed in a state where it can be placed in places commonly known as hiding places for bed bugs, such as the back of carpets or rugs, gaps between tatami mats or walls, or the back of drawers in beds or furniture.

[0031] In this embodiment, diatomaceous earth powder 6 is used as the porous powder, but silica containing silicon dioxide or zeolite containing aluminosilicate may be used instead. These substances are also known to be effective in exterminating bed bugs.

[0032] In this embodiment, the diatomaceous earth powder 6 may be colored in a color that attracts bed bugs. For example, the diatomaceous earth powder 6 may be colored in red or black, colors that are considered to be favored by bed bugs. The diatomaceous earth powder 6 may also be colored in a color that can be distinguished by comparing it with the color of the location where the harmful arthropod killing device 1 is installed. Instead of coloring the diatomaceous earth powder 6, granules of a color that has an attractant effect may be mixed into the diatomaceous earth powder 6. Furthermore, when coloring the diatomaceous earth powder 6, it is preferable to select a non-aqueous paint rather than an aqueous paint from the standpoint of water absorption.

[0033] In this embodiment, the holding member 2 has a rectangular sheet shape. The holding member 2 is preferably colored to attract bed bugs, such as red or black, which are considered to be the colors that bed bugs like.

[0034] The holding member 2 is constructed by implanting fibers onto a sheet-like substrate. The diatomaceous earth powder 6 is held by becoming entangled with the fibers. The sheet-like substrate may be, for example, thick paper, cardboard, synthetic paper containing synthetic resin such as polypropylene, synthetic resin, metal, wood, etc. The fibers may be any material that can hold the diatomaceous earth powder 6, and may be, for example, natural fibers such as wool or cotton, acrylic, nylon, polypropylene, polyester, rayon, vinyl chloride, etc. Furthermore, the fibers implanted into the holding member 2 are preferably a color that attracts bed bugs, such as red or black, which are considered to be preferred by bed bugs.

[0035] The holding member 2 may be formed by applying an adhesive substance onto a sheet-like substrate. In this case, the diatomaceous earth powder 6 adheres to the adhesive substance and is held by the holding member 2. The sheet-like substrate may be paper, resin, metal foil, or the like. The adhesive substance may be a rubber-based adhesive, an acrylic-based adhesive, or the like.

[0036] The pest arthropod killing device 1 further includes an attractant liquid that attracts pests by vaporizing around the holding member 2, and a container 4 that contains and holds the attractant liquid. In the example of FIG. 1, the container 4 is placed in the center of the holding member 2, but the container 4 may be placed around the holding member 2 or may be placed outside the holding member 2.

[0037] The container 4 may be made of a material capable of holding the attractant liquid for a certain period of time, such as glass or synthetic resin. The container 4 has multiple vents to allow the vaporized attractant liquid to dissipate. The container 4 is also configured so that the fiber material immersed in the attractant liquid is exposed to the outside of the container 4 to prevent leakage of the contents if the container 4 is tipped over.

[0038] The attractant liquid is a solution of lactic acid, ammonia, and human pheromones mixed in water. Lactic acid is similar to the components of human sweat, ammonia is part of human body odor, and human pheromones are special chemicals that attract bed bugs. The attractant liquid may be composed of at least one of substances derived from human secretions, including at least components of sweat and body odor, or physiologically active substances derived from harmful arthropods.

[0039] Specifically, the attractant liquid may contain at least one or more of lactic acid, butyric acid, urea, ammonia, 2-methylphenol, 4-methylphenol, carbon dioxide, dimethyl disulfide, dimethyl trisulfide, (E)-2-hexenal, (E)-2-octenal, 2-hexanone, and histamine, as well as other substances, including substances capable of producing these compounds through chemical reactions. The attractant liquid may also be dissolved in water, but is not limited to these. These substances are contained in human sweat, human body odor, and human breath, and therefore can trick bed bugs into believing that a human is present near the container 4 containing the attractant liquid, effectively attracting bed bugs by acting as a bed bug aggregation pheromone. Depending on the selection of these substances, bed bugs can be more effectively attracted.

[0040] The attractant liquid is preferably an aqueous solution containing lactic acid at a concentration of 0.5% to 10%, ammonium lactate solution at a concentration of 0.5% to 10%, strong ammonia water at a concentration of 0.1% to 1%, and volatile substances contained in the agglutination pheromone at a concentration of 1% to 3%. The attractant liquid may be prepared during the manufacture of the pest arthropod killing device 1 and stored in a sealed state in the container 4, and may be released to the atmosphere while still stored in the container 4 during use. Alternatively, the attractant liquid may be prepared during use by mixing lactic acid, ammonia, and human pheromones with water.

[0041] The harmful arthropod killing device 1 further includes a carbon dioxide generator 5 that generates carbon dioxide around the holding member 2. Specifically, poles 3 are fixed to the four corners of the holding member 2, the tips of the four poles 3 are connected above the center of the holding member 2, and the carbon dioxide generator 5 is hung from the connection part, thereby positioning the carbon dioxide generator 5 around the holding member 2.

[0042] The carbon dioxide generator 5 generates carbon dioxide by reacting sodium bicarbonate (baking soda) as a carbonate with citric acid as a solid acid. Specifically, the carbon dioxide generator 5 brings sodium bicarbonate and citric acid into contact with water, causing a chemical reaction to generate carbon dioxide. To achieve this, the carbon dioxide generator 5 is configured by mixing sodium bicarbonate, citric acid, and a small amount of water to form a paste, which is held in a container with ventilation holes. The carbon dioxide generated by the carbon dioxide generator 5 is a gas similar to human exhaled air, which attracts bed bugs. The effectiveness of the carbon dioxide generator 5 can be maximized by adjusting the amount of water added to the sodium bicarbonate and citric acid.

[0043] The carbonate is not limited to sodium bicarbonate and may be, for example, magnesium carbonate, calcium carbonate, or potassium carbonate. The solid acid is not limited to citric acid and may be, for example, lactic acid. Furthermore, the carbon dioxide generator 5 is not limited to one that generates carbon dioxide using a carbonate and a solid acid and may be, for example, a carbon dioxide generator 5 that holds dry ice in a container with an air hole.

[0044] (How to kill harmful arthropods) A method for killing arthropod pests using the arthropod pest killer 1 is described below. First, diatomaceous earth powder 6 is held in the holding member 2. This can be done during the manufacturing stage of the arthropod pest killer 1, as described above, or during use. Next, the holding member 2 holding the diatomaceous earth powder 6 is placed at the target location for killing arthropod pests. As described above, the diatomaceous earth powder 6 is preferably colored to attract bedbugs. It is also desirable to use diatomaceous earth powder 6 of a color that can be distinguished by comparing it with the color of the target location. This makes it easy to find and reliably collect diatomaceous earth powder 6, even if the diatomaceous earth powder 6 is released from the holding member 2 and scattered around the arthropod pest killer 1.

[0045] Furthermore, containers 4 containing an attractant liquid are placed around the holding member 2, and a carbon dioxide generator 5 is suspended above the center of the holding member 2. In order to effectively use the attractant liquid and carbon dioxide to attract bed bugs, it is preferable to place the pest arthropod killing device 1 in a well-ventilated location.

[0046] By setting up the pest arthropod killing device 1 as described above, the attractant liquid in the container 4 generates an odor that attracts bed bugs, and the carbon dioxide generator 5 generates carbon dioxide that attracts bed bugs, which attracts the bed bugs to the holding member 2. As the bed bugs move on the holding member 2, the diatomaceous earth powder 6 held by the holding member 2 adheres to the body surface of the bed bug, thereby killing or injuring the bed bug as described above.

[0047] The pest arthropod killing device 1 of this embodiment can effectively capture and kill bed bugs using diatomaceous earth powder 6 without using chemicals, thereby maintaining a clean home environment. In particular, because the diatomaceous earth powder 6 is held in the holding member 2, after use the holding member 2 can be disposed of along with the diatomaceous earth powder 6 and the dead bed bugs. This makes it possible to reliably collect the diatomaceous earth powder 6 and the dead bed bugs, compared to when the diatomaceous earth powder 6 is directly sprinkled on objects such as beds and futons, and in this respect, the home environment can be maintained clean and harmless.

[0048] The harmful arthropod killing device 1 of this embodiment may be reused by collecting the diatomaceous earth powder 6 and dead bed bugs from the holding member 2 after use and sprinkling new diatomaceous earth powder 6 on the holding member 2. In this case, it is possible to avoid using an object such as a bed or futon with diatomaceous earth powder 6 or dead bed bugs remaining on the object, thereby maintaining a clean and harmless home environment.

[0049] In the above embodiment, the pest arthropod killing device 1 has been described assuming that bedbugs are killed as pest arthropods, but the pest arthropod killing device 1 of this embodiment may be applied to pest arthropods other than bedbugs. Other pest arthropods include mites, fleas, centipedes, ants, etc. Depending on the pest arthropod to be killed, the composition of the attractant liquid for attracting the pest arthropods may be adjusted, and other gases may be generated instead of carbon dioxide. [Explanation of symbols]

[0050] 1 Harmful Arthropod Killer 2. Retaining member 3. Paul 4 containers 5. Carbon dioxide generator 6. Diatomaceous earth powder

Claims

1. A method for killing harmful arthropods, comprising scattering porous powder and allowing the porous powder to adhere to the body surfaces of harmful arthropods, thereby killing the harmful arthropods.

2. A porous powder to be spread on a target site to kill arthropod pests, A porous powder colored in a color that has an attractive effect on the harmful arthropods and that is different from the color of the target area.

3. A porous powder; a sheet-like holding member for holding the porous powder; A harmful arthropod killing device comprising:

4. 4. The pest killing device according to claim 3, wherein the holding member has a color that has an attractive effect on the pests.

5. 4. The pest killing device according to claim 3, wherein the porous powder is a powder of diatomaceous earth, silica, or zeolite.

6. 4. The pest killing device according to claim 3, wherein the holding member has fibers on a surface thereof that hold the porous powder.

7. 4. The pest killing device according to claim 3, wherein the holding member is provided with an adhesive substance that adheres and holds the porous powder to at least a portion of the surface of the holding member.

8. 4. The pest killing device according to claim 3, further comprising a container for holding an attractant liquid that vaporizes around the holding member to attract the pests.

9. 4. The pest killing device according to claim 3, further comprising a carbon dioxide generator for generating carbon dioxide around the holding member.

10. A step of scattering and holding porous powder on a sheet-like holding member; A step of placing the holding member holding the porous powder at a location where pests are killed; A method for killing arthropod pests, comprising:

11. The method for killing arthropod pests according to claim 10, further comprising the step of vaporizing an attractant liquid that attracts the arthropod pests around the holding member.

12. The method for killing arthropod pests according to claim 10, further comprising the step of generating carbon dioxide around the holding member.

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