JPS6322001A - Use of steam release equipment for improving efficiency of insecticidal bait against cockroach - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the control of cockroaches using poisonous baits and devices incorporating such baits. More particularly, the present invention relates to the use of water to increase the effectiveness of poisoned baits and devices incorporating such baits.

A number of means have been used in attempts to exterminate cockroaches. Smoking uses gaseous materials, cracks,
It must penetrate the eyes and other areas to directly contact and exterminate cockroaches. The spray is cockroach (roach)
It will do so if it is sprayed directly to the area or if it is sprayed in an area and the cockroaches ingest the material. A very effective method uses poison bait. Bait is a substance believed to attract cockroaches,
For example, a composition containing a food substance, combined with a poison known to kill cockroaches. Cockroaches ingest the bait and generally return to their nest, where they die. It may also cause the death of other cockroaches in the nest.

It is also known to use baits to exterminate cockroaches. In some cases, insects become trapped within the device after entering the device, either by mechanical construction or by adhesion to a rubber-like material. Either way, the device quickly fills up and becomes useless. Poisons and poison baits are also incorporated into the device, where the cockroaches ingest the poison or poison bait and return to the nest area to die.

One objective of the present invention is to control cockroaches by attracting them to poison and poison bait.

Another purpose is to provide a bait that incorporates a feeding station and water.

These and other objects of the invention will become apparent as the description progresses.

In the past, it has been believed that cockroaches are attracted by certain food substances, such as molasses, corn syrup, honey, etc.; various powders, such as oatmeal, bran, wheat, peanut butter, etc. Such substances are known poisons for cockroaches and, as a powder,
or blended with an oil or fat binder. Those food substance combinations that gave the highest insecticidal rates were considered to be particularly attractive to cockroaches.

Certain substances may be more attractive to ingestion by cockroaches due to texture, aroma, or other factors, but cockroaches are not attracted to the food, but by scavenging it, i.e., when the food is discovered. It has now been discovered that one can discover food by searching various areas until it is found. Additionally, cockroaches were discovered to be attracted to water.

Briefly stated, one invention involves using water as an attractant to lure cockroaches to a poisoned bait. Since cockroaches are attracted to water, this ensures that the cockroaches find the ir bait and ingest it. If you don't use water,
Discovery of poisonous baits will be a matter of chance and thus the kill rate will be lower because fewer cockroaches will seek out and ingest the poisoned baits, as the baits used will repel cockroaches. Assume that it is not, and that cockroaches like to eat.

Examples of bait compositions are disclosed in US Pat. No. 4,049,460 and US Pat. No. 4,514,960. Examples of poisons are disclosed in US Pat. No. 4,087.525 and US Pat. No. 4,163,836. Suitable feeding ground (baitfeeding 5tation)
is disclosed in U.S. Pat. No. 4,563,836.

It will, of course, be understood that the above are merely examples and that bait poisons or baits that are non-repellent and effective to the insects are suitable.

One method of preparing poison bait is to heat the various ingredients together until a molten mixture is obtained, then pour this mixture into a suitable container where it solidifies. That's true.

Preferably one poison bait of the present invention is a solid, non-particulate, non-flowing, non-repellent, fully edible insecticidal composition, containing a pentagenon hydrazone compound, a specific food attractant. system, and a binder. If necessary, preservatives are added to the composition.

Pentadien-3-one substituted aminohydrazones are described by Tomcufcik, U.S. Pat.
No. 78,201, it is described as an antimalarial agent and an antituberculous agent. Lovell, U.S. Pat. No. 4,087,525 and U.S. Pat. No. 4,1
No. 63,102, the disclosure of which is incorporated herein by reference, describes the use of these compounds as insecticides. The Lovell patent insecticides generally have the following formula: where R1 and R2 are each hydrogen, halogen, group -
CF3. -C47) Lt*Ay, C, -C4 alkoxy, or c, -Ca alkylthio, R3 is hydrogen or methyl, provided that when R3 is methyl, both R1 and R2 are also methyl, R4 and R
5 represents hydrogen or c, -c4 alkyl;
Represents a 4-carbon methyl or phenylalkylene group or a 1,2-cyclohexylene group, reaction 6 is CH-
Ca alkyl, compounds represented by and salts thereof.

Particularly useful compounds are those represented by the formula: where X is hydrogen or methyl. Various Lepidopterous, Orthopterous, Dibuterous
pterous) and Hymenoplerous (Hymen
opterous) insects of formula (I) and (I
The efficacy of the compound represented by I) is also determined by Loebel (
Lovell).

However, the forms and methods of use described in these patents generally relate to agricultural applications, where granular bait is used and distributed over a large open area, and where the bait suggested therein is The type of system is clearly unsuitable for general household consumer use. In domestic applications, pesticides or pesticide-impregnated substances may come into contact with and/or ingested by children or livestock. Additionally, the types of food substances suggested by these patents have been discovered by the inventors to be unacceptable in consumer product formulations, and this product does not meet the requirements for an acceptable consumer product. "Non-flowable" as used herein is non-flowable over the temperature range typically encountered under transport and storage conditions. Pesticide-impregnated substances that are defined as being non-flowing over the temperature range typically encountered under, and are completely edible by cockroaches and thus inedible pose no risk to children or livestock. .

There is therefore a need for a release form of these insecticides that is suitable for use in normal households for the control of cockroaches, and for formulations that have the above properties and are effective in combating cockroaches.

The present invention provides a solid, non-particulate, non-flowing, non-repellent, fully edible pesticide fraction acid containing about 0.25 to about 5% by weight of the m-acid. Comprising a pentagenone-substituted amidinohydrazone compound (I) in combination with a food attractant system and a non-repellent water soluble binder. The pesticide particulate acid may further include a water-soluble preservative to, among other things, increase the shelf life of the composition.

Preferably, the present invention provides insecticidal compounds of the formula
trifluoro p-tolyl) = 1,4-pentadiene-
3-one (1,4,5°6-tetrahydro-5,5-dimethyl-2-pyrimidinyl)hydrazone (I II I)
, where in formula (■I) each X is methyl,
A set of such insecticides is provided comprising an acidic acid.

The insecticide subset acids of the present invention are cohesive solids at room temperature and may be in any convenient form, such as wafers,
Pellets, molded caps (CaP), etc. can be taken.

The food attractant system used in the compositions of the present invention is a liquid food selected from the group consisting of molasses, corn syrup, maple syrup, honey, and mixtures of two or more of these foods, and solid food--oatmeal. Comprising a mixture of foods. The amount of food attractant system and binding substance used in the insecticide-bait composition, and the ratio of one force to the other, are not critical, provided that they form a cohesive solid at room temperature. Generally, liquid foods have a composition of about 2
0-50% by weight, preferably 35-45%, and oatmeal comprises about 25-75% by weight of the composition;
Preferably it constitutes 30-45% by weight.

The non-repellent binding substances used in the compositions of the invention are solid or liquid, completely edible by cockroaches.
It is a woody or lipophilic water-soluble substance. Such materials include, for example, polyethylene glycols of the type available from Union Carbide φ Corporation under the trademark Carbowax@. Carbowax@8000 is a preferred binding material. The binding agent generally comprises about 10% of the composition.
~55% by weight, preferably 12-20% by weight.

The insecticidal compound is generally not fully soluble in the binding material, solid insecticidal compound can be incorporated into the binding in the form of discrete solid particles, but it is possible to convert this compound into a more easily dispersible form. C3CI8 fatty acids, which are preferred, have been found to be particularly useful when converting insecticidal compounds into a dispersed form in the binding material. The fatty acid salt of the insecticidal compound forms an internal phase dispersed within the continuous binder phase. salts of other acids, such as those obtained by reacting insecticidal compounds with surfactants containing fatty acid groups;
Certain water-soluble salts, such as acetates, lactates, propionic salts, sulfates, sulfonates, etc., may also be useful when dispersing the insecticidal compound in the binder. Generally, the insecticidal compound is dispersed by reacting with at least equimolar amounts of acid. Preferably, a molar excess of acid is used. A preferred insecticide subset acid containing about 1-3% by weight insecticidal compound and 1-3% by weight fatty acid is obtained. Oleic acid is the preferred fatty acid.

Preferred compositions can be readily prepared by hot-melt techniques, whereby a dispersion of the acid salt of the insecticidal compound in a suitable organic solvent, preferably Improper Tools, is combined with the fluidity of the food attractant system and the binder. to the heated mixture, then poured or cast into a suitable mold or cap, and cooled to room temperature.

As mentioned above, suitable non-repellent preservatives can also be incorporated into the composition to prevent spoilage. When used, the preservative should be palatable to cockroaches (e.g. dihydroacetic acid does not meet this requirement); preferred preservatives are 1-
Cis isomer of (3-chloroallyl)-3,5,7-thiliaza-1-azonia-adamantane chloride, Dow.
Dowicil from The Chemical Company
) @200. and when used, it will generally constitute at least about 0.2%, preferably about 0.2 to 0.5% by weight of the composition.

Preferred compositions of the invention are used free in devices that are resistant to children and pets.

Insects are freely accessible and attractive. Such a device is disclosed, for example, in U.S. Pat. No. 4,563,83.
It is stated in No. 6.

It is, of course, understood that the poison bait need not be prepared as described above, but can simply be prepared by mixing, depending on the binder, or by melting with ordinary heating means as described above. The bait can also be used as a loose fine powder mixture if it is not dangerous to children or pets.

The water attractants of the present invention can be combined with the bait in a variety of ways depending on the form in which the bait is dispersed.

If the bait is loosely spread, water can be present in the container adjacent to the bait. The same arrangement can be used if the bait is placed in a bait station container. Obviously, if the water does not last as long as the bait, more water can be supplied to continue attracting the cockroaches to the bait.

Alternatively, the water floating means can be made as part of an insect feeding station containing food. This can be any suitable form,
For example, pot-like containers, porous
It can also be a piece of absorbent media, such as porous hydrophilic plastic, felt, etc., attached to the feeding station.

Another method for providing water attraction is to incorporate water into the bait composition. This can be done by including water-absorbing substances in the bait formulation.

A method of making water-absorbing polymers is incorporation into bait mixtures. In particular, highly water-absorbing polymers with water absorption ratios greater than 1O can be used to bind water into the composition.

Regarding the highly water-absorbing polymers used for the purposes of the present invention, it is necessary that the polymer satisfy at least the following requirements: (1) It must not have any attractive or appetizing properties to insects; Must not be; (
2) it should have strong water absorption and water retention; (3) it should be able to absorb and release water; (4) it should have no binding effect and
does not change the physical properties of the material formulated as the primary drug; (5) it does not develop mold; and (6) its stable nature allows for easy use.

Highly water-absorbing polymers used in the present invention and satisfying all of these conditions are electrolytic polymers with ionic groups, lightly crosslinked by physical chemical means: examples thereof. are as follows: [hydrolysis product of powder-7 graft polymer of crylonitrile: cross-linked product of graft polymer of starch-sodium acrylate; cross-linked bioacid salt of styrene-maleic anhydride copolymer; Sodium polyacrylate crosslinked product;
Graft copolymer of polyvinyl alcohol-7 acrylate: saponification product of a copolymer of vinyl ester-ethylenically unsaturated carboxylic acid or its derivatives. Among others, highly water-absorbing polymers, such as natural polymers, such as starch-free and electrolyte polymers containing synthetic carboxylate and hydroxyl groups, have a high water absorption ratio and very good water retention. and also has excellent strength after water absorption. It is therefore particularly desirable to use this, in particular a saponified copolymer of a vinyl ester (X) and an ethylenically unsaturated carboxylic acid or derivative thereof (Y), molar ratio x:Y = 20
=80-80:20, [Sumikagel (Sumikagel)
e l@) S-50 (registered trademark of Sumitomo Chemical;
The polyvinyl alcohol-7 acrylate graft polymer has high strength and excellent water retention after water absorption, which contributes to the attractive and appetizing properties of the composite acids of the present invention. is useful when maintained at elevated levels under conditions of use for extended periods of time.

Regarding the highly water-absorbing polymers used in the present invention, a variety of types currently exist, including those capable of absorbing and retaining hundreds to thousands of times their own weight in water. . Ultimately, the desired level of water retention can be set by selecting the appropriate one compared to the conditions mentioned above and incorporating it into the composition. The highly water-absorbing polymers used in the present invention have strong water-absorbing and water-retaining properties and can repeatedly absorb and release water without interfering with its attractive and appetizing properties to insects. can do. It also has no binding properties, does not react with major chemicals, and does not form molds, so it is a particularly limiting amount to include in feeds to eradicate harmful insects. However, in practice between 0.1 and 10% on a dry weight basis is desirable in view of water retention time.

If the water absorption is less than 10, the water retention is not satisfactory even when adding large amounts of water, and this changes the physical properties of the bait and makes it impossible to achieve the desired effect. will.

As for the method of formulating the highly water-absorbing polymers of the present invention into baits, the powders are simply added and mixed in any manner during bait preparation and no special techniques are required.

Furthermore, when the bait is in the form of granules, the polymer can be attached to the surface of the granules by using a suitable adjuvant. Also, when highly water-absorbing polymers are suspended in water and heated, the water-soluble portion increases with increasing temperature and becomes an aqueous solution, which can also be used.

For example, Sumikagel (Sumikage!@) S-5
0 is dissolved in water to about 3% at 120° C. and remains liquid even when the temperature is returned to room temperature.

The highly water-absorbing polymer used in the present invention is
Absorbs water in closed containers and reduces humidity.

Therefore, it can be blended with feed for the purpose of maintaining quality. This quality stabilizing effect also increases the practical value of the invention.

Other methods of providing a source of water vapor include saturating highly water-absorbent porous plastic materials with water or placing such materials within water-containing containers.

Porous plastic materials are non-flexible, non-deformable sintered synthetic resins with controlled porosity and interconnecting pores in all directions, resulting in agglomeration of bonded polymer particles. formed from things. The porosity of the porous material can be adjusted during its manufacture, thus ensuring a wide range of water vapor release devices. Sintered porous water release devices can be fabricated from high density polyethylene, low density polyethylene, ultra high molecular weight polyethylene, polypropylene, polyvinylidene chloride, and the like. The products are commercially available under the trade names "Porex J Porous Plastic" and "PorousPoly." The pore size of the applicator can vary within a wide range, depending on the liquid to be released. Low viscosity liquids, such as perfumes, can be released best from plastic fogging caps with small pores, such as pores of 1 micron or less. Generally, pore size can vary between about 1 and 200 microns, and for most purposes about 10 to 50 microns is generally preferred.

The porous applicator head can be placed in the opening of a container forming a reservoir or in the water to be dispensed. The container can only be filled with liquid product. Alternatively, the reservoir can be part of the bait station, for example a reservoir above the bait station.

Example 1 Corn syrup (400g), oatmeal (380g) is described according to the following example.
) and carpo wax (Car b.

wax@) 8000 (118 g; polyethylene glycol obtained from Union Carbide Corporation) was mixed and heated to about 70°C. A dispersion of insecticidal compound (III), 20 g, was prepared in 20 g of oleic acid and 60 g of isopropanol and 20 g of Dowicil.
Add @200 L7', , : (7) Pour the insecticide solution into the heated food-binder mixture, mix well, then pour into small caps and cool to room temperature.

The following examples demonstrate the effectiveness of using water in combination with bait.

Example 2 The following study was conducted to demonstrate the effectiveness of a steam release device in improving bait performance against cockroaches. The device was tested and tested in a 6'X6' open glass arena with cockroach hiding places, food and plastic deflectors. compared to a similar arena without. The water vapor release means was a porous plastic oleethylene solid placed within the water container. The bath was as described in Example 1.

Figure 1 shows the arrangement of food, bait and water release means.

The results are listed in Table I.

Table 1 1 14.9 0.082
34.0 0.243 47.0
0.434 43, 4 0
, 275 46.1 0.176
56.5 0.107 21.
1 0.198 48.7
0.29 average 39.0 0.22
Bait in the presence of water vapor release device 62.5 0.17 84.2 0.44 68 , 7 0 , 68 79 , 0 0 , 37 7 m6 0.57 89.3 0.26 78.7 0.42 49. 5 0.52 72.9 0.43 When a steam release device is present, the mortality rate of cockroaches is 2
They were more than twice as large and consumed twice as much food.

Example 3 This example is an experiment to demonstrate the water orientation of German cockroaches.

11. Methods and Materials 100-200 cockroaches (all stages).
4X7. OX7. I put it in an Ocm box with a lid. A hole is drilled in the box to accommodate a single letter shaped clear plastic cylinder with a diameter of 1.25 cm. A cockroach passing through one arm of this tube will reach the junction and turn towards one of the test substances provided at each end of the tube 3 cm from the junction (FIG. 2). Only one insect can enter the tube at a time, and each insect is used only once.

After five replicates, the test substance was exchanged between the arms of the tube. After one replicate experiment, the entire T-tube was cleaned with methanol, which may affect cockroach localization.
Removed cockroach secretions.

Experiments were conducted under red light to exclude visual stimulation.

The results are shown in Table II.

As shown by the results in Table II, the combination of food and water, in which there is orientation towards the water source but not towards the food source (COMBATti4), -
It attracted more cockroaches than bait alone.

As explained above, the water itself can be present in a container separate from part of the bait station container. It can be incorporated into an absorbent medium separate from the bait station or attached to the bait station, eg paper, sponge, foam plastic. The water can be present in a closed structure or matrix and sold together with the bait station, or it can be added after the bait station is in place.

[Brief explanation of the drawing]

FIG. 1 shows the arrangement of food, bait and water release means. FIG. 2 shows an experimental setup for demonstrating cockroach localization to water. H = Cockroach hiding place. B=Plastic deflector to increase surface area for scavenging. Patent applicant: American Cyanamid Company Drawing 1! F (No change in content) 13m/J, River IG2 Procedure auxiliary device (Dragon) August 10, 1986

Claims (1)

[Scope of Claims] 1. A method for attracting cockroaches to a poisonous bait, which comprises placing the poisonous bait in the presence of a water vapor release means. 2. The method according to claim 1, wherein the water vapor releasing means is a container containing water. 3. The method of claim 1, wherein the water vapor release means is a porous medium saturated with water. 4. Claim 1, wherein the bait is contained in a bait station.
The method described in section. 5. A cockroach feeding station characterized by incorporating poison bait and water vapor release means. 6. The cockroach feeding ground according to claim 5, which comprises poison bait and water. 7. The cockroach bait station of claim 6, wherein the poison bait is in solid form and the water is contained in an absorbent medium. 8. The cockroach feeding station of claim 7, wherein the absorbent medium is a porous polymeric material. 9. The cockroach bait station of claim 8, wherein said porous polymeric material and water are incorporated into said solid bait. 10. Attractive bait characterized by containing water. 11. The bait according to claim 10, which contains food ingredients, poison, and water. 12. The bait of claim 11 further comprising a water-absorbing polymeric material. 13. The bait according to claim 12, wherein the bait is cast and in solid form.