JPS6326722B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a method and apparatus for exterminating pests by fumigating fumigation chemicals, and more specifically, to fumigating agricultural pests and sanitary pests in rooms and other limited spaces by fumigating fumigation chemicals intensively in a short period of time. For example, it relates to a method and device for controlling mosquitoes, flies, cockroaches, etc. A conventional method for exterminating pests by fumigating fumigation chemicals in a short period of time is to use a so-called fumigation agent, which mixes the fumigation agent with a combustion agent and releases the agent using the combustion heat and smoke of the combustion agent. is common, but it has the following drawbacks. In other words, in order to quickly evaporate a large amount of fumigation chemicals, it is essential to burn a combustion agent that produces highly toxic smoke. There is a danger to the human body, etc. and a risk of fire. More importantly, with the above-mentioned fumigants, thermal decomposition of the fumigating agent due to combustion heat, resulting in a decrease in effective volatilization rate, that is, a decrease in fumigation efficiency, and economic loss cannot be avoided. The present invention, instead of the above-mentioned known pest extermination method using a fumigation agent, can force a large amount of fumigation agent with hot air to instantly and effectively diffuse the active ingredients over a wide area, and can substantially reduce smoke generation. The object of the present invention is to provide a new fumigation method and a device for the same, which does not cause problems such as toxicity and irritating odor, and is free from the risk of fire. That is, in the present invention, when fumigating a fumigation agent to control pests, etc., the fumigation agent is mixed with one or more of each of an inorganic carrier and a saccharide, and the mixture is heated with hot air without combustion. The present invention relates to a fumigation method characterized in that a fumigation agent is effectively fumigated by the action of the inorganic carrier and hot air, and an apparatus using the method. In the present invention, fumigation agents include pest and rodent repellents, bactericidal agents, repellents,
Various chemicals used for purposes such as flavoring can be used. The following can be exemplified as representative drugs. () Insecticides (1) Pyrethroid insecticide Γ3-allyl-2-methylcyclopenta-2
-en-4-one-1-yl dl-cis/
Trans-chrysanthemate (generic name: allethrin; trade name: pinamine; manufactured by Sumitomo Chemical Co., Ltd., hereinafter referred to as pinamine) Γ3-allyl-2-methylcyclopenta-2
-en-4-one-1-yl d-cis/
Trans-chrysanthemate (trade name: Pinamin Fuorte: manufactured by Sumitomo Chemical Co., Ltd.,
(hereinafter referred to as pinamin fuorte) Geometric optical isomer of Γ pinamine, trade name Exrin (manufactured by Sumitomo Chemical Co., Ltd.) and general name Bioallethrin. ΓN-(3,4,5,6-tetrahydrophthalimido)-methyl dl-cis/trans-
Chrysantemato (generic name: Phthalthrin:
Product name Neopinamine: Manufactured by Sumitomo Chemical Co., Ltd., hereinafter referred to as Neopinamine) Γ5-benzyl-3-furylmethyl d-cis/trans-chrysanthemate (Product name: Cryslonfurte: Manufactured by Sumitomo Chemical Co., Ltd., hereinafter referred to as Cryslon Γ3-Phenoxybenzyl 3-(2,2-
dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate (generic name permethrin; trade name Exmin: manufactured by Sumitomo Chemical Co., Ltd., hereinafter referred to as Exmin) Γ3-phenoxybenzyl d-cis/trans-chrysanthemate (general name Phenothrin: Trade name Sumitrin: Manufactured by Sumitomo Chemical Co., Ltd. (hereinafter referred to as Sumitrin) Γα-cyano-3-phenoxybenzyl 2
-(4-chlorophenyl)-3-methylbutyrate (common name: fuenvalerate, hereinafter referred to as fuenvalerate) Γα-cyano-3-phenoxybenzyl
2,2,3,3-tetramethylcyclopropanecarboxylate (generic name: fenpropathrin, hereinafter referred to as fenpropathrin) (2) Organophosphorus insecticide ΓO,O-dimethyl O-(2,2-dichloro)vinyl Phosphate (hereinafter referred to as DDVP) ΓO,O-dimethyl O-(3-methyl-4
-Nitrophenyl)thionophosphate ΓO,O-diethyl O-2-isopropyl-4-methyl-pyrimidyl-(6)-thiophosphate ΓO,O-dimethyl S-(1,2-dicarpoethoxyethyl )-dithiophosphate (3) Carbamate insecticide ΓO-isopropoxyphenyl Methyl carbamate (hereinafter referred to as Bigon) () Fungicide ΓS-n-butyl-S'-p-tert-butylbenzyl N-3 biridyl Imidodithiocarbonate (trade name Denmart: manufactured by Sumitomo Chemical Co., Ltd., hereinafter referred to as Denmart) ΓN-(3',5'-dichlorophenyl)-1,2
-Dimethyl-cyclopropane-dicarboximide (trade name Sumirex: manufactured by Sumitomo Chemical Co., Ltd., hereinafter referred to as Sumirex) () Repellent ΓN,N-diethyl m-toluamide (hereinafter referred to as Sumirex)
DET) Γ di-n-butyl succinate (hereinafter referred to as DET)
DNBS) Γ di-n-propyl isocincomeronate (hereinafter referred to as DPIC) Tetramethylthiuram disulfite, guanidine, naphthalene cresol, cycloheximide, zinc dimethyl dithiocarbamate, cyclohexylamine, N,N-dimethylsulfenyl dithiocarbamate , 2,6-dimethyl-octadiene-(2,6)-αl(8) (hereinafter referred to as citral), 0,0-diethyl S-2-ethylthioethyl dithiophosphate (hereinafter referred to as citral)
ETP), 0,0-dimethyl S-2-isopropylthioethyl dithiophosphate (hereinafter referred to as
MIP), r-chloralose, 4-(methylthio)-3,5-xylyl N-methylcarbamate, 4-aminopyridine anthraquinone,
Tetramethylthiuram disulfide, diallyl disulfide () Sodicide Antu-, monofluoro-sodium acetate, warfarin, coumachlor, fumarin, comatetralyl silyloside, norbomide, N-3-pyridylmethyl-N ′-nitrophenyl urea,
Endroside, alphanaphthylthiourea,
Thiosemicarbazide, deifenacum, pipal, chlorophacinone, silatrene, calciferol Various additives such as potency enhancers, volatilization rate improvers, deodorants, fragrances, etc., which are commonly used in the above-mentioned drugs in the present invention, are added. Can be added arbitrarily. Potency enhancers include piperonyl butoxide, N-propylisome, MGK-264, cinepirin 222, cinepirin 500, Riesen 384,
IBTA, S-421, etc., volatilization rate improvers include phenethyl isothiocyanate, dimethyl himixate, etc., deodorants include lauric acid methacrylate (LMA), fragrances include citral,
Examples include citronellal and the like. In the present invention, minerals such as pearlite, talc, diatomaceous earth, pentonite, kaolin, ilmenite, activated clay, and silica sand can be used in combination with the above-mentioned fumigation agent and various additives added as necessary. , silica, bauxite, zeolite, silicon dioxide, aluminum oxide, calcium carbonate, titanium oxide, aluminum silicate, synthetic zeolite, silicon nitride, zinc carbonate, etc., as well as natural fibers, synthetic fibers, vegetable fibers,
Examples include pulp, asbestos, sponge, pumice, unglazed activated carbon, and the like. Furthermore, a thermal conductivity imparting agent may be added to the above-mentioned inorganic carrier, and in this case, it is effective to improve the effective volatilization rate without compensating for the insufficient thermal conductivity of the carrier. The above-mentioned thermal conductivity imparting agents include metals such as iron, aluminum, gold, silver, copper, nickel, platinum, carbon fibers, thermal conductive resins such as epoxy resins, etc., in the form of plates, foils, powders, etc. It can be used in the form of granules, bases, etc., and processed by pasting, impregnating, mixing, coating, etc. In the present invention, the mixing ratio of the above-mentioned inorganic carrier to the fumigation agent can be appropriately selected depending on the desired efficacy of the resulting drug, but usually the inorganic carrier is about 1/2 or more times the weight of the fumigation agent. Good. As the mixing ratio of the inorganic carrier increases, the effective volatilization rate of the fumigation agent gradually improves, but if the amount is too large, the effect does not improve. Usually, the inorganic carrier is 1/2 to 30 times the weight of the fumigation agent, preferably 1
It is best to set the weight to about ~50%. Further, in the present invention, it is essential to use sugars together with the above-mentioned fumigation agent and inorganic carrier. Examples of the saccharides include lactose, starch, cellulose, methylcellulose, carboxymethylcellulose, etc., which act as fumigation aids in fumigation agents. The mixing ratio of the saccharides can be arbitrarily determined, and it is usually appropriate to set it at about 30 to 50% by weight in the resulting mixture. Further, the mixed form of the fumigation agent, saccharide and inorganic carrier is not particularly limited, but in consideration of workability and ease of production and use of the resulting pesticide, suitable granules, lumps, pellets, pastes, It is preferable to make it into a mat shape or to mix and encapsulate it in a hot-melt resin bag or the like, and various binders, solvents, etc. can be used depending on the usage form. In the present invention, mixtures in various forms obtained by kneading, granulating, and drying the above fumigation agent, inorganic carrier, sugar, and appropriate additives as necessary are heated with hot air to target the above mixture without burning it. The inorganic carrier in the mixture is heated with hot air. In the above, various types of heat sources can be used that can heat the mixture with hot air to provide a temperature at which the fumigation agent in the mixture can be fumigated without burning the mixture. Specifically, the following heat sources can be advantageously used. (1) Compounds that generate heat due to hydration reactions, such as calcium oxide, magnesium chloride,
Examples include substances that undergo an exothermic reaction simply by adding water, such as aluminum chloride, calcium chloride, and iron chloride. (2) Electric heat source that generates heat when energized Examples include heating wires such as nichrome wires, sheet heaters, and heaters using semiconductors. (3) Combinations of metals or metal compounds that generate heat through oxidation reactions and auxiliary agents, etc. For example, methods of mixing iron powder and oxidizing agents (ammonium chlorate, etc.), metals and metal oxides that have a smaller ionization tendency than the metals, or A method of mixing iron with an oxidizing agent, a method of contacting a mixture of iron and at least one of potassium sulfate, iron sulfide, metal chloride, iron sulfate, etc. with water and oxygen, and a method of contacting a mixture of iron and at least one of potassium sulfate, iron sulfide, metal chloride, iron sulfate, etc. with a metal that has a higher ionization tendency than iron and a method that ionizes more than iron. Examples include a method in which a mixture of a metal with a low tendency to halogenide is brought into contact with water, a method in which a mixture of a metal and a bisulfate is brought into contact with water, and a method in which water is added to a mixture of aluminum and an alkali metal nitrate. (4) Methods that utilize the oxidation reaction of metal sulfides For example, a method can be exemplified in which a mixture of soda sulfide and at least one selected from iron carbide and carbon black is brought into contact with oxygen. In the case of utilizing the heat generated by energization among these heat sources, it is advantageous to construct the heat source so that it can be used repeatedly, since only the mixture can be replaced and the heat source can be used at low cost. In an apparatus for carrying out the method of the present invention, the above-mentioned various heat sources are used to heat the mixture of the above-mentioned fumigation agent, inorganic carrier, and sugar with hot air. Heating with hot air is carried out, for example, by placing the mixture containing the above-mentioned fumigation agent, inorganic carrier, and saccharide in a container with appropriate ventilation holes, and placing a heat source and a blower outside the container. The blower used is for forcing air heated by the heat source into the mixture of the drug, saccharide, and inorganic carrier to heat the mixture and diffuse the drug vapor. The blower may have blades that are rotated by electrical means such as a battery, mechanical means such as a spring or rubber, or other means. The rotational speed of the blade can be determined as appropriate depending on the purpose of chemical fumigation and the amount of chemical, but it is usually 600~
It is best to set it at around 12000rpm. The blades are preferably made of a heat-resistant material capable of withstanding the hot air being blown, such as metal such as iron or aluminum, or heat-resistant plastic. The method according to the invention is advantageously carried out using an apparatus consisting of a suitable container with passages for forced ventilation of hot air. The container is equipped with the above-mentioned blower in its passageway, and a mixture of the drug, saccharide, and inorganic carrier is placed in the passageway. The container constituting the apparatus of the present invention is made of a heat-resistant material such as iron plate, aluminum plate, tin plate, etc. The container may preferably have an insulating outer wall to make its handling safe. The container and the passage provided in the container for forced ventilation of hot air may have any form. Basically, the container has an upper-opening type in which a vent hole (suction hole) for sucking air outside the container is optionally provided in the lower part of the side wall, and the hollow part thereof serves as a passage. The upper part of the passage is provided with a weir having ventilation holes through which the mixture can be placed and hot air can pass. The mixture can be filled onto the above-mentioned weir in any form such as powder, but preferably, it can be placed in, for example, a hot-melt film bag or the like. It is also a preferred embodiment to place the mixture in a heat-resistant bag made entirely of steel, and in this case there is no fear that the mixture will leak from the ventilation holes of the weir. Also, instead of providing a weir for placing the mixture, an inner container with suitable ventilation holes in the bottom can be used. The inner container can be used by fitting into the upper opening of the outer container, and the mixture can be replaced together with the inner container, which is convenient. It is also possible to fill the passage with the mixture by making the passage U-shaped and leaving a gap at the bottom through which hot air can pass. The blower may be installed anywhere as long as it forces hot air into the passage, but it is preferably installed between the vent hole provided in the container and the mixture placement part located in the passage. The heat source may be located external to the container or may be located within the passageway. Examples of preferable heat sources that can be installed in the passage include heating wires, sheet heaters, etc. that generate heat when energized. This is usually installed between the mixture arranging section and the blower, and as the blower rotates, the air sucked into the container through the vent hole is heated and turned into hot air, which is then supplied to the mixture. Substances that generate heat in contact with water and substances that generate heat in contact with air are preferably placed in a suitable container outside the container via the container wall, which acts as a heat transfer surface for heating the air drawn in through the vents. It is filled with air and installed. By heating the mixture with hot air due to the heat generated by the heat source, the mixture is heated without causing any ignition combustion. In the method of the present invention, the fumigation agent in the mixture is forcibly dissipated by hot air, and its volatilization is promoted. Moreover, it is rapidly and effectively carried out in an extremely short period of time without being exposed to high temperatures that can cause thermal decomposition or denaturation. spread to. Therefore, according to the method of the present invention, mosquitoes, flies, eggs, bed bugs, dust mites,
It is possible to extremely effectively control sanitary pests such as cockroaches and agricultural pests, rodents such as rats, and sterilize them. Furthermore, unlike conventional methods, the method of the present invention does not utilize combustion of a combustible agent, and has the advantage that it can be carried out safely and easily without substantially causing the generation of irritating odors, smoke, etc., or the risk of fire. Next, an apparatus for carrying out the present invention will be explained. FIG. 1 is a longitudinal cross-sectional view showing a basic embodiment of the apparatus of the present invention, in which a heating means that generates heat by energization is provided in a passage for forcing hot air. 2 and 3 are longitudinal sectional views showing a modified embodiment of the apparatus of the present invention shown in FIG. 1 above. FIG. 4 is a longitudinal cross-sectional view showing one embodiment of the apparatus of the present invention which utilizes a hydrated pyrogen as a heating means. Figure 5 shows one of the devices of the present invention that uses a substance that generates heat when it comes into contact with air and/or oxygen as a heating means.
FIG. 3 is a longitudinal cross-sectional view showing one embodiment. FIG. 6 is a perspective view showing a container containing a substance that generates heat when in contact with air and/or oxygen, which is used in the apparatus of the present invention shown in FIG. 5. In FIGS. 1 to 6, the same symbols have the same meanings. 1 is a container having a cylindrical shape, 2 is a passage, 3 is a ventilation hole, 4 is a blower, 5 is a mixture, and 6 is a heat source. When the device of the present invention shown in FIGS. 1 to 3 is used, the heat source 6 is energized and the rotary blades of the blower 4 are rotated. As a result, the air sucked into the container 1 through the vent hole 3 is heated and turned into hot air, which is then forced through the passage 2. The mixture 5 placed in the passage 2 may be heated, for example, directly by hot air forced through the passage 2 as shown in FIG. 2, or indirectly through a weir 16 as shown in FIG. Heating is applied, which causes evaporation of the drug in the mixture and rapidly evaporates the drug vapor. The mixture 5 is also filled in a removable inner container 8 having a ventilation hole 7 at the bottom and placed in the passageway 2, as shown in FIG.
It may be heated directly by the hot air coming in from the inner container 8 or indirectly through the wall of the inner container 8, particularly the bottom wall 8a. Use of such an inner container 8 is safe and convenient because the mixture 5 can be replaced with the container without touching the mixture 5. Further, in the apparatus shown in FIG. 1, the upper opening of the inner container 8 is sealed with a heat-melting film 9. The film 9 is heated by hot air or the like and is naturally melted and removed. Therefore, the use of this device is simple. In using the apparatus of the present invention shown in FIG. 4, the bottom of a container 10 containing a hydrated pyrogen placed on the bottom wall of the container 1 is immersed in water 17.
Water is supplied through a water supply hole 1 formed in the bottom wall 10α of the container 10.
1, it gradually oozes out toward the exothermic substance 6 while permeating the water permeable layer 12, and comes into contact with the exothermic substance 6, causing it to generate heat. The air sucked into the container 1 through the suction port 3 by this heat is heated through the partition wall that acts as a heat transfer surface, and is forced upward in the passage 2 as hot air by the blower 4. In this way, the mixture 5 is heated by the hot air and the drug evaporates, similarly to what was explained in FIGS. 1 to 3, and intense evaporation of the drug vapor takes place. In the apparatus shown in FIG. 4, the container 10 for containing the hydropyrogen or its bottom wall 10α is preferably of a removable construction so as to allow the container to be replaced or refilled with the hydropyrogen. In addition, the water permeable layer 12 used in the above figure is the water supply hole 1
1 into the container 10, so that the exothermic substance that comes into contact with the water generates heat extremely efficiently, and even when the exothermic substance is in a powder state, it can be uniformly exuded from the water supply hole. It is possible to reliably prevent spillage. In the apparatus of the present invention shown in FIG. 5, a container 14 containing a pyrogenic substance that generates heat upon contact with air and/or oxygen at the bottom of the container 1 has a ventilation hole 14-1 in its bottom wall.
, which is sealed with an openable film 15 made of a material that does not allow air to pass through from the outside. When this device is used, the film 15 is peeled off to open the vent hole 14-1 and the exothermic substance 6 is exposed to the air and generates heat.
Due to this heat generation, the air inside the container 1 is heated through the bottom wall 8a, and is forced upward in the passage 2 by the blower 4, heating the mixture in the same manner as explained in FIGS. 1 and 4. , causing intense transpiration of the drug. Examples are given above to explain the present invention in more detail. In addition, the effective volatilization rate of the pest control agent in the example is calculated by fumigating the insecticidal/sterilizing agent in a closed container, passing the air inside the container into benzene, collecting the agent in the air in benzene, and concentrating it. After measuring by gas chromatography, initial insecticidal and
It is expressed as a percentage of the weight of the bactericidal agent. Example 1 The insecticides listed in Tables 2 and ³ below and the Contains a sample of the disinfectant-containing mixture. Ring heater 6 (400W) and fan 4 (4 blades)
energizes to generate hot air. The rotation speed of fan 4 is 3000 rpm. This heats the mixture for 5 minutes (maximum temperature about 300°C) and diffuses the insecticide and fungicide vapors. The results of measuring the effective volatilization rate of the insecticidal/sterilizing agent at that time are shown in Tables 2 and 3 below. In addition, each sample shown in Tables 2 and 3 was further mixed with water, granulated, and dried to obtain a fumigation agent according to an example of the present invention.

【table】

【table】

[Table] Comparative Example 1 An insecticidal/sterilizing agent is volatilized in the same manner as in Example 1 except that the sugar and inorganic carrier are not used. The results are shown in Tables 4 and 5 below.

【table】

[Table] Comparative Example 2 A sample was prepared in the same manner as in Example 1 except that no sugar was used, and using this sample, insecticidal/sterilizing chemical vapor was diffused in the same manner and the effective volatilization rate was measured. The results are shown in Table 6 below.

[Table] As is clear from the comparison of Tables 2 to 3 and 4 to 6 above, according to the method of the present invention, by mixing sugars and inorganic carriers with insecticidal and fungicidal agents, the same amount of agents can be It can be seen that when hot air is heated to a certain temperature, it can be volatilized ten to several tens of times more effectively. Furthermore, it is clear that a sufficient effective volatilization rate cannot be obtained simply by mixing an inorganic carrier with a fumigation agent, and that the use of the above-mentioned saccharides is particularly important in order to achieve the desired effects of the present invention. <Airborne concentration measurement test> 1 Test method By the method of the present invention (hot air heating), suction was carried out in a 25.3 m ³ room (2.7 x 3.6 x 2.6 m: 6 tatami mats) using the collection device shown in Figure 2. Mouth a is shown in Figure 3.
_{The three} points A ₁ to A (indoor) were installed at a height of 1 m, and the sample (No. 9) was evaporated in the center of the room.
On the other hand, as a comparative test, a sample with the same formulation as Sample No. 9 was
It was evaporated by the method (articulated heating) (see Japanese Patent Publication No. 1). As soon as transpiration starts, the collection device sucks it out (every minute
1.0), the active ingredients in the evaporated gas are dissolved and collected in the benzene in the collection bottle. After a certain period of time, benzene is combined and concentrated, a predetermined amount of internal standard substance is added, and further concentrated to about 1 ml, which is used as a sample solution. Hereinafter, the active ingredients will be quantified according to the gas chromatographic quantitative method in the standards and test methods. The concentration of the active ingredient retained in 1 m ³ of air is determined from the amount collected within each elapsed time period shown below, and calculated using the following formula. Air concentration of active ingredient (ml/ ^m2 ) = R x amount of triphenyl phosphate (mg) x 1000 () / 1.0 () x 15 (min) (R is 5-benzyl-3-furylmethyl d
- Weight ratio obtained from the calibration curve of cis/trans-chrysanthemate to triphenyl phosphate) The collection time was divided into 8 times for 15 minutes each from immediately after the start of transpiration to 6 hours and 15 minutes after the lapse of 6 hours and 15 minutes. The measured air concentrations are shown in Table 7 below.

[Table] As is clear from the comparison in Table 7 above, according to the method of the present invention, by heating the mixture with hot air, the active ingredient is evenly and uniformly diffused at each point of A ₁ to _{A 3} in the room. I know that there is.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of the device of the present invention, FIGS. 2 and 3 are longitudinal sectional views showing a modified embodiment of the device of the invention, and FIG. 4 is a longitudinal sectional view showing another embodiment of the device of the invention. FIG. 5 is a vertical cross-sectional view showing still another embodiment of the device of the present invention, FIG. 6 is a perspective view of a storage container used in the device of the present invention shown in FIG. 5, and FIG. The figure shows the collection device used in the (airborne concentration measurement test) of the present invention, and Figures 8-1 and 8-2 show the indoor (2.7 m x 3.6 FIG. 2 is a plan view and a front view showing a situation in which a sample is placed in an area (m x 2.6 m). In the figure, 1 is a cylindrical container, 2 is a passage, 3 is a vent, 4 is a blower, 5 is a mixture, 6 is a heat source, A ₁
~ _A3 is a sample, B is a collection bottle, C is a pressure-resistant rubber tube for connection, D is a flow meter, E is a suction bottle, and a is a collection suction port for evaporated gas.

Claims (1)

[Claims] 1. When fumigating a fumigation agent to control pests, etc., the fumigation agent is mixed with one or more of each of an inorganic carrier and a saccharide, and the mixture is heated with hot air to cause combustion. A fumigation method characterized by effectively fumigating the fumigation agent by the action of the inorganic carrier and hot air without accompanying. 2. The fumigation method according to claim 1, wherein the fumigation agent is an insecticide. 3. The fumigation method according to claim 1, wherein the fumigation agent is a disinfectant. 4 Claim 1 in which the inorganic carrier is silicon dioxide, aluminum oxide, calcium carbonate, titanium oxide, perlite, talc, or diatomaceous earth
Fumigation method as described in section. 5. The fumigation method according to claim 1, wherein the hot air has a temperature of about 70°C to about 300°C. 6. The fumigation method according to claim 1, wherein the hot air is sent by a blower. 7. The fumigation method according to claim 6, wherein the rotation speed of the blower is 600 to 12000 rpm. 8. Consisting of a container having a passageway for forced ventilation of hot air, the passageway is equipped with a blower for forced ventilation of hot air, and the passageway contains a fumigation agent that is heated and evaporated by the hot air; A fumigation device characterized in that a mixture containing an inorganic carrier supporting a drug and a saccharide is arranged. 9. The fumigation device according to claim 8, wherein heating means for heating air to generate hot air is provided in the passage. 10. The fumigation device according to claim 8, in which the heating means is an electric heat source that generates heat when energized. 11. The fumigation device according to claim 8, in which the heating means uses a compound that generates heat when it comes into contact with water. 12. The fumigation device according to claim 8, in which the heating means uses a compound that generates heat upon contact with air and/or oxygen.