KR100405252B1 - Insecticide bait emulsion composition, insect bait comprising the same and method for eradication of insects using same - Google Patents

Abstract

Insecticidal emulsion gels or paste compositions comprising the active ingredient in stably used crosslinked polyacrylic acid polymers, starches and modified methylcellulose are prepared from formulated humidified baits containing pesticides for the eradication of insects or pest populations. Used for A method of using a stable emulsion gel (A) or paste composition for the eradication of insects, in particular cockroaches, is described as a cohesive fluid delivery system for pest extermination treatment.

Description

How to eradicate insects

Various methods and compositions for applying pesticide containing baits have been described in the prior art. The efficiency of such compositions is improved by the inclusion of various additives. Pastes or gels are particularly preferred emulsion compositions for delivering the pesticidal active ingredient together with the desired insect food source.

The purpose of the development of an improved delivery system for insecticide-containing bait compositions is to produce stable baits that contain a high percentage of water and contain a composition containing edible nutrients and stimulants in an amount that can induce insects to eat the bait. It is to let.

Insects such as cockroaches search for food and water, but they cannot find food at a distance of more than 5 to 10 inches. As a result, the cockroach feeds on the back of the appliance and along the baseboard. When the cockroach encounters a bait source at the bait point, they examine the bait using its mouth and antennae. If the bait meets the nutritional needs of the insect, the insect eats the bait. If the bait contains an insecticide effective amount of toxic agent, the insect will die. Cockroaches tend to learn regression to previous test areas where food sources have previously been provided.

Gel and paste compositions for combating cockroaches are a preferred means of providing pesticides to the food as a combination of suitable bait / toxicant emulsions. Several gel or paste bait emulsion compositions are known. For example, US Pat. No. 4,812,309 describes insecticidal gel compositions for eradicating cockroaches. Such gelling agents are nonionic surfactant block copolymers having an average molecular weight of about 12,500. The composition is in liquid or gel form depending on the temperature at which the formulation is prepared.

Patent 5,021,237 describes pesticidal gel compositions useful for eradicating cockroaches. The pesticidal gel composition comprises pentadienone hydrazone as a toxic agent, fatty acids, lower alcohols, gelling agents, water, bases and hydrocarbon propellants. Gel bait compositions include an oil-in-water emulsion consisting of toxic substances in corn syrup solution. The gelling agent is stearic acid. The gel is delivered by pressure spraying the bait in tacky form in situations where a solid or liquid form is not suitable.

U.S. Patent Application No. 442,024, filed November 27, 1989, describes a foam composition. The foam composition is effective but breaks into a thin film so that insects (eg cockroaches) are present in a form that is not ideal for picking up by mouth. Emulsion bait of the present invention is maintained for a long time in the form of a lump, so the cockroach is easy to ingest it.

The present invention relates to an improved pesticide bait emulsion composition having a novel emulsion system for imparting improved delivery and application properties.

1 is a plot of the rheological viscosity versus temperature profile of a stable emulsion of the invention designated "A" and a prior art gel designated "B".

Description of the Preferred Aspects

The above object of the present invention can be achieved by forming a novel mixture or solution of proteinaceous feed material and certain other ingredients such as carbohydrates and various binding ingredients and carriers to complete the formulation into a stable emulsion composition.

Preferred thickeners or emulsifiers are carboxy polymethylenes, which are also known as carboxy vinyl polymers and are also described as vinyl polymers with active carboxyl groups. Such vinyl polymers are crosslinked polyacrylic acid polymers which give unique dispersion performance to added formulations with good thickening efficiency and low flowability. Such materials are pH dependent and are generally activated at a pH of about 6.0 to about 9.0. When combined with starch, the preferred gel formulation is obtained. Starch has unique properties for viscosity enhancement. When dispersed in the presence of crosslinked polyacrylic acid polymer, hydrated starch increases the viscosity in solution. The result is a very satisfactory gel emulsion that is stationary and resistant to flow stress even at low viscosity and high temperatures.

When starch or starch derivatives are used in the present invention, all starch or starch derivatives may be used regardless of the source, for example starches derived from tubers such as potatoes, or grains such as corn or rice. Or starch derivatives are used. Starch is used with any modified edible starch, especially maize starch swollen in waxy (e.g., derived from waxy corn) or non waxy cold water. Edible starch modified in cold water has many desirable properties of specially prepared starch without heating.

Co-gelling agents are modified alkylcelluloses. As used herein, the term "alkylcellulose" includes cellulose in which an average of about 1.1 to about 2.5 useful hydroxy groups on each glucoside unit are converted to alkyl ethers. The term "alkyl" is usually used to include lower alkyl groups having up to about 8 carbon atoms and optionally include hydroxyl groups or other functional groups. Mixtures of various alkylcellulose compounds and / or derivatives are also useful. The alkyl group of the alkyl cellulose is preferably methyl preferably. In addition, the alkyl group is preferably hydroxypropyl in combination with hydroxypropyl or methyl. Particularly useful alkyl celluloses are hydroxypropyl methylcelluloses. All of the aforementioned alkylcelluloses can be referred to as totally modified methylcellulose.

In a preferred embodiment of the invention, the intake stimulant composition comprises:

From about 2.0 to about 10% animal protein source as an uptake stimulant; From about 0 to about 10 weight percent of a vegetable protein source as an uptake stimulant; From about 10% to about 30% carbohydrate source and from about 1% to about 20% lipid.

These food / bait compositions are consumed very efficiently by insects such as cockroaches (such as Blatella germanica and Periplaneta americana) that typically appear in locations that provide sufficient food, moisture, and shelter for survival in both residential and industrial facilities. It turned out.

Carbohydrate sources can be selected from fruit juice, honey, sucrose, fructose, maltose, arabinose, galactose sugar, lactose, D-lactose, D-glucosamine and the like.

Various protein sources can be used in the formulation. Cocoon pupa is a byproduct of the silk industry obtained during the separation of silk. The composition of the present invention can be readily prepared by milling the dry pupa in a conventional manner for maximizing the yield of particles of 10 to 60 mesh size, which is preferred. Animal digestive organs are a source of acceptable animal protein obtained from cattle, poultry, fish and worms. Animal digestive organs also include internal organs that are obtained as by-products from such animal slaughter processes. Such animal materials are preferably treated by spray drying, freeze drying and oven drying before use.

Since the spray drying method is a prior art, it is not necessary to give a detailed example thereof. However, for clarity, spray drying is briefly described as follows. Spray drying is unique in that the finely divided droplets are dried by direct contact with anhydrous medium (typically air) for a very short contact time of 3 to about 30 seconds. This short contact time minimizes pyrolysis of the dried product. Drying from the particles is usually carried out in two stages: constant speed and speed drop. The main drying force is the temperature difference between the ambient air and the temperature of the particles. This technique is particularly effective in the production of poultry livers useful in the bait compositions of the present invention.

Various insect killing ingredients are formulated with attractant compositions. Such emulsion formulations may also contain active pesticidal ingredients, preferably pentadien-3-one substituted amidino hydrazone insecticides, such as 1,5-bis (α,) described in US Pat. No. 4,087,525. α, α-trifluoro-p-tolyl) -1,4-pentadien-3-one, 4,5,6,7-tetrahydro-1H-1,3-diazepin-2-yl hydrazone , 1,5-bis (α, α, α-trifluoro-p-tolyl) -1,4-pentadien-3-one, 4,5,6,7-tetrahydro-1H-1,3- Diazepin-2-yl hydrazone hydrochloride and 1,5-bis (p-chlorophenyl) -1,4-pentadien-3-one, 4-phenyl-1-imidazolin-1ylhydrazone It can be formulated with hydroiodide. US Patent No. 4,086,525 describes the use of such materials as pesticides, which are incorporated herein by reference.

Other pesticides, in particular organophosphates, for example chloropyriphosph [O, O-diethyl O- (3,5,6-trichloro-2-pyridinyl) phosphoro, instead of substituted amidino hydrazone insecticides Thioate], carbamate such as proposox [2- (1-methylethoxy) phenyl methylcarbamate], phenotrine [(3-phenoxyphenyl) methyl-2,2-dimethyl-3- (2 Pyrethroids such as -methyl-1-propenyl) cyclopropane carboxylate], chlorinated hydrocarbons, fluoro aliphatic sulfonamides such as sulfluramide [N-ethyl perfluorooctane sulfonamide], boric acid, hydroprene [ethyl Insect growth inhibitors such as (E, E) -3,7,11-trimethyl-2,4-dodecadienoate] and avermectin B ₁ [80% avermectin B _1α (5-O-dimethyla) Vermectin A _1α (R = C ₂ H ₅ )) and 20% R _1b (5-O-dimethyl-25-de (1-methylpropyl) -25- (1-methylethyl) avermectin A _1α (RCH ₃₎₎ HABERE Abamectin mixture containing a], and the It may be used compounds derived by microbial.

The lipid phase contains edible oils, fatty acids, active ingredients and emulsifiers, and the aqueous phase contains carbohydrates, thickeners, uptake stimulants and preservatives. Other long chain fatty acids and various substrates may be used in place of the fatty acid and lipid components used herein.

Therefore, the present invention provides a pesticidal bait composition comprising a stable emulsion of a bait feed composition containing an insecticidal effective amount of a substituted amidino hydrazone insecticide or a fatty acid salt thereof and an ingestion stimulant according to the present invention. Includes methods for eradicating cockroaches, including applying to. Additional edible carriers and additives such as fish, sugars, flours and the like can be added or blended until the mixture is homogeneous.

Antimicrobials and / or antioxidants may also be included. Optionally, sorbic acid / potassium sulfate, Dowcil ^™ [2- (3-chloroallyl) -3,5,7-triaza-1-azonia-1-adamantane, which can be added to inhibit the growth of microorganisms Cis isomer of chloride), ester of p-hydroxybenzoic acid such as propyl paraben / methyl paraben (propyl p-hydroxy benzoate / methyl p-hydroxybenzoate), captan [N- (trichloromethylthio) -4 -Cyclohexane-1,3-di-carboximide], sodium silicate, sodium dehydroacetate, sodium benzoate, bromo-nitro propane diol (e.g. 2-bromopropane 1,3-diol), 3- About 0.5 to about 1.0% antimicrobial agents, such as iodo-2-propylbutyl carbamate and benzothiazolin-3-one, can be incorporated into the formulations of the emulsion compositions of the present invention.

exam

Bioefficiency Test

Hydramethylnon [1,5-bis- (α, α, α-trifluoro-p-tolyl) -1,4-pentadien-3-one-4,5, which is the active ingredient in the stable emulsion of the present invention , 6,7-tetrahydro-1H-1,3-diazepin-2-yl hydrazone hydrochloride], the pesticide bait product for the German cockroach as test species was tested by the following biological assay. Try it.

Twenty German cockroaches of selected age and gender were collected in three test areas (three models for treatment), respectively. Each test area is a box cover (16in x 10in x 6in) or a box cover with perforated cover to prevent escape of the test insect. Each test area has a shelter and a 4oz water bottle is prepared with a wick as a source of water for insects in the area. The hideout consists of a cardboard mailbox (4.5in x 2.75in x 2.5in) with a triangular opening on one side of the panel.

After the cockroach has acclimated for 48 hours, test bait samples are introduced into each test area. Standard conditions consist of a temperature of 80 ° F, a relative humidity of 50% and a light cycle of 12 hours each.

In each test zone, hides and water sources are placed at the end of the zone furthest from the bait. Another food (3-4 dog food nuggets or commercial food) is placed in the center of the test area. The treatment consists of the stable emulsion product of the invention according to Table 3, except that it uses 5.2% by weight instead of 5.00% by weight of poultry liver.

Cumulative lethality in each test area is recorded 3, 4, 5 and 6 days after the product is placed in each test area. The results are reported in Table 2. LT ₅₀ is 3 days and LT ₉₀ is about 4.5 days.

Environmental assessment

Environmental assessments are conducted to determine the efficiency of the stable emulsion compositions of the present invention. A representative purpose insect is the natural cockroach population in residential apartments where roaches naturally appear. In other words, this test is carried out under the natural environmental conditions of the apartment.

The active ingredient pesticide used is hydramethylnon. The following table shows the stable emulsion gel bait formulations used in environmental assessment.

The environmental assessment involves pre-traping the apartment with a sticky trap for 48 hours before applying the emulsion gel formulation to the apartment. This establishes the number of controls or populations prior to placing the emulsion bait. Emulsion baits are placed in the apartment's kitchen at the rear corners under the sink, under both sides of the stove, under both sides of the refrigerator, at the rear of the upper shelf of the upper cabinet, at the rear corner of the bottom cabinet, and in the cabinet above the refrigerator. About 20 g of emulsion gel formulation is dispensed at this location. This distributes the bait of approximately equal weight to the bait position at twelve points. Ten models are used for each of the ten apartments during the first week and ten models for each of the ten apartments for the second week. Stable gel formulations are applied using 20 g syringe per apartment.

The results of biological assays on the environmental assessment and the efficiency of the stable emulsion of the present invention are as follows.

After 4 weeks, the average reduction in cockroach population is 51.72%. The second test using 1.0% active ingredient according to the formulation resulted in a 79.1% reduction in cockroach population.

Rheological comparison

Rheological measurements are performed on a Boehlin Oscillatory using a 30 mm parallel plate measurement system (P30) with a gap of 1 mm and operating at 0.2 Hertz, 1 Hertz or 10 Hertz with an amplitude of 3% under a temperature controlled in the range of 6 to 90 ° C. Viscometer (VOR model)].

The viscosity versus temperature profile of the two gel formulations is shown in FIG. 1, with arrows indicating the appropriate scale (Pa · s) corresponding to the two data curves. The gel composition of the chicken sea embodiment is referred to as "stable emulsion" corresponding to the curve "A". The control gel described in prior patent US Pat. No. 4,812,309 is referred to as a "prior art" gel corresponding to curve "B". Comparison of the temperature profiles reveals a significant difference in the properties of the two gels. Preferred "stable emulsions" of the present invention have a lower viscosity as the temperature increases, whereas the prior art gels slightly increase in viscosity until they exhibit very rapid melting point transitions at about 75 to 80 ° C, and then very low viscosity. It falls sharply in numbers. This melting point transition and the corresponding undesirable viscosity drop are not observed at any temperature in the case of the preferred "stable emulsion" of the present invention.

Other physical parameters of the two gels at the three temperatures typically encountered under conditions of use are shown in Table 4. The phase angle ø, which rises from 0 ° to 90 ° and corresponds to the relative degree of solid and liquid properties, respectively, is observed to increase with temperature in the case of the gels of the prior art, indicating that it becomes liquid with increasing temperature. In contrast, the phase angle measured for the stable emulsions of the present invention decreases with increasing temperature, indicating that the formulations tend to become solid with increasing temperature. In addition, the comparison of the viscosity values shows that the preferred stable emulsion maintains a higher nominal viscosity compared to the gels of the prior art at typical use temperatures.

liquidity

Flowability measurements are performed using an Instron Automated Materials Testing System (Series IX6.02) using a syringe filled with product at a temperature controlled in the 70-120 ° F. range.

As a result of the comparison of the fluidity values, the stable emulsion of the present invention is more particularly throughout its temperature range, compared to the prior art gels which flow under reduced application pressure at 120 ° F and sag from their point of application undesirably flow. At 120 ° F, a higher dominant behavior is maintained.

Deflection test

The stable emulsions of the present invention are compared in turn with gel formulation labeled Prior Art I and Prior Art II using a nonionic surfactant block copolymer according to US Pat. No. 4,821,309. Each type of gel is applied to a substantial amount on a surface that is nearly perpendicular at room temperature. The surface is then exposed to elevated temperatures between 100 and 120 ° F. Once the higher temperature is reached, all test samples are kept at this temperature and read at 3 hours, 6 hours and 48 hours. Record these results in Table 6.

Firmness-Adhesive ("Ruggedity-Infiltration Method")

The penetration test is to arbitrarily measure the firmness of these materials by measuring the distance or the like in which a predetermined form of a predetermined weight penetrates the plasticized material or the like within a specific period of time. The firmness of the material is related to the composition and properties of the material, the sample temperature at the time of measurement and the previous history of the sample. This test is performed with samples at room temperature, about 70 ° F. ± 3, 100 ° F. and 120 ° F. This method can be applied to plastic fats and solid emulsions such as shortening, margarine, butter, paints, cosmetic creams, gels and similar products.

Summary of the Invention

The present invention relates to improved stable insecticide formulated bait emulsion compositions which are particularly useful for the eradication of insects, in particular for the eradication of cockroaches, methods for their preparation and methods for their use. More particularly, the present invention relates to insecticidal emulsion gels or paste compositions comprising the active ingredient in a stable emulsion using crosslinked polyacrylic acid polymers, starch and modified methylcellulose.

The present invention is applied not only to industrial facilities, but also to residential areas of insects in residential areas for long periods of time. The present invention provides a means for delivering toxic insect baits in sticky form in situations where solid or liquid forms may not be suitable. This is especially useful and effective for cockroaches.

The emulsion compositions of the present invention have the following advantages over aerosol contact and residual sprays, conventional bait tray techniques, and other gel and paste formulations.

This formulation does not cause discomfort. The more bait you release, the more complete it will be processed and eliminated. Toxic-containing bait emulsions may be located more closely and in close proximity to insect hides than standard bait applications such as bait traps and other gel or paste formulations. The composition is tacky, but not sufficiently fluid to disperse from a gas pressurized can or mechanically from a tube or syringe, or from a cauking gun form that applies the composition as a bead of material. The application of toxic agents can be designed to meet the structural requirements to which the substance is applied. The emulsion of the present invention delivers bait and toxic agents in a form that remains in a stable form that can be readily ingested by insects over a long period of time. Other advantages include the prevention of contamination on porous surfaces, stability over a wide range of temperatures, and infinite pot life during processing and handling. The present emulsions, which are advantageous agents for attracting insects, especially cockroaches, contain a high proportion of water (humidity).

Purpose of the Invention

It is an object of the present invention to provide pesticidal, pesticidal or pesticidal / pesticidal compositions and methods of applying these compositions which can be dispersed as sticky flowable substances in an improved emulsion which overcomes the problems and deficiencies of the prior art.

It is also an object of the present invention to be easy to manufacture (formulate) and to use (apply), to be safe for the environment and to insects or pests in the immature and mature stages of the earth, in particular but not limited to insect and other arthropod pests. It is to provide a composition effective for erasing one or more, and methods for preparing and applying the same. This is particularly effective in the eradication of cockroaches such as: subfamily, direct cockroach species, Periplaneta americana, Plata orientalis, P. australasiae, of the members of Blatillaria Residential cockroaches including Bratella germanica, Supella longipalpa (F.), Smokey Brown (P. Fuliginosa (Serville)), and Florida tree (Eurycotis floridana (Walker)) cockroach.

It is a further object of the present invention to provide stable emulsion compositions containing baits and toxic agents, which contain large amounts (% by weight) of water and which can suspend ingestion stimulants and other additives. Such emulsions can incorporate a wide variety of potentially immiscible pesticidal or pesticidal ingredients into a single, stable, homogeneous or heterogeneous cohesive fluid delivery system to deliver a wide range of insect or other habitat related pests by delivering the active ingredients. have.

It is a further object of the present invention to satisfy the nutritional needs of cockroaches while containing a large amount (% by weight) of water, which can then be consumed as bait, and at the same time sufficient to compete with other food sources in the environment. It is to provide a stable emulsion composition containing bait and toxic agents capable of suspending a suitable uptake stimulant and other additives.

Another object of the present invention is also to provide a method for simultaneously eradicating two or more populations of insects and habitat related pests (eg cockroaches) by a single stable emulsion system, such as a gel or paste delivery system.

Another specific object of the present invention is an emulsion stabilizer and one or more suspending polymers (e.g. homopolymers) to prepare a delivery system that contains large amounts of water while simultaneously suspending large amounts of heterogeneous substances such as ingestion stimulants and active ingredients. To be incorporated.

These and other objects are achieved by the compositions and methods of the present invention, which will become apparent from the following detailed description.

Description of the invention

Use of the stable emulsions of the present invention can be achieved by incorporating the various pesticidal, pesticidal, and pesticidal / pesticidal components in the form of stable emulsions, such as pastes or gels, with or without other additives, preferably together with bait materials It provides a simple and easy technique for the easy application and provision of active substances in the appropriate ground habitat of pests.

The components and contents of the stable emulsion pastes and gels of the present invention are shown in Table 1 below.

TABLE 1

Due to the above properties, the stabilizing emulsions of the present invention can be used in bait trays as bait toxic compositions containing large amounts of water.

While the invention has been described in terms of particular aspects and applications, those skilled in the art to which the invention pertains, based on these teachings and descriptions, should further aspects without departing from or departing from the scope of the claims of the invention. You can run Accordingly, the drawings and descriptions described herein are intended to facilitate understanding of the invention and should not limit the scope of the invention thereto.

Claims (17)

A suitable insect bait (a) comprising at least one feed material selected from the group consisting of 2 to 20% by weight protein source, 10 to 30% by weight carbohydrate source and 1 to 20% by weight lipid, (B) 0.25 to 20% by weight of an insecticide, an amount effective to exterminate the target population of insects when applied to the target habitat, 0.3 to 2.1% by weight of the emulsion forming additive (c) and Other formulation additives (d) are combined with the components (a), (b) and (c) in an amount of up to 100% by weight (the ratios of each component based on the total weight of the bait emulsion composition) And a stable insecticide bait emulsion composition which is a mixture formed by mixing insect bait and pesticide with an emulsion forming additive and other formulation additives. The method of claim 1, wherein the emulsion forming additive comprises 0.1 to 1.4 wt% of at least one crosslinked polyacrylic acid polymer and 0.2 to 0.7 wt% of at least one modified alkylcellulose, and other formulation additives are at most 7.5 wt%. A stable insecticide bait emulsion composition comprising a thickener of the. The method of claim 1 wherein the emulsion forming additive is at least one component selected from the group consisting of cross-linked polyacrylic acid polymers and modified alkylcelluloses wherein alkyl is lower alkyl having 8 or less carbon atoms and with or without hydroxyl groups. Stable insecticide bait emulsion composition. The stable insecticide bait emulsion composition of claim 2 wherein the emulsion forming additive is carboxy polymethylene and hydroxypropyl methylcellulose. The method of claim 2 wherein the suitable insect bait comprises from 2 to 10% by weight of one or more animal protein sources and from 10 to 30% by weight of one or more carbohydrate sources, wherein the proportion of each component is based on the total weight of the bait emulsion composition. Stable insecticide bait emulsion composition. The stable insecticide bait emulsion composition of claim 2 wherein the pesticide is a substituted amidino hydrazone or fatty acid salt thereof. The stable insecticide bait emulsion composition of claim 4 wherein the insecticide is penadien-3-one substituted amidino hydrazone which is a substituted amidino hydrazone. The 1,5-bis (α, α, α-trifluoro-p-tolyl) -1,4-pentadien-3-one of claim 2, wherein the pesticide is a substituted amidino hydrazone. 5,6,7-tetrahydro-1H-1,3-diazepin-2-yl hydrazone. Stable insecticide bait emulsion composition. Insect bait attractants suitable for attracting 13 to 70% by weight of insects to toxic insect baits, 0.25 to 20% by weight of pesticides toxic to the desired insect, and to provide a stable emulsion of insect bait attractants and toxic insecticides. A toxic insect bait for exterminating the desired insect, comprising a moist stable emulsion composition comprising an effective amount of 0.3 to 2.1% by weight of the emulsion forming component, wherein the proportion of each component is based on the total weight of the emulsion composition. Insect bait attractants suitable for attracting 13 to 70% by weight of insects to toxic insect baits, 0.25 to 20% by weight of pesticides toxic to the desired insect, and to provide a stable emulsion of insect bait attractants and toxic insecticides. A target comprising the application of a stable emulsion formulated comprising an effective amount of 0.3 to 2.1% by weight of an emulsion forming component (the proportion of each component is based on the total weight of the emulsion composition) to the locus or habitat of the target insect. How to eradicate insects. Suitable insect bait comprising animal protein source as intake stimulant of 2 to 10% by weight, vegetable protein source as up to 10% by weight of intake stimulant, 10 to 30% by weight of carbohydrate source and 1 to 20% by weight of lipid. a), Pentadien-3-one substituted amidino hydrazones, chloropyrifos, carbamate, pyrethroids, chlorinated hydrocarbons, fluorinated aliphatic sulfonamides, boric acid, insect growth inhibitors and avermectin B ₁ [80% avermectin B _1a (5-O-Dimethylavermectin A _1a (R = C ₂ H ₅ )) and 20% R _1b (5-O-dimethyl-25-de (1-methylpropyl) -25- (1-methylethyl A mixture of microorganisms derived from a mixture with avermectin A _1a (R = CH ₃ )) and 0.25 to 0.25, an amount effective to eradicate the target population of insects when applied to the target habitat. 20% by weight of pesticide (b), 0.3-2.1 wt% emulsion gel comprising a crosslinked polyacrylic acid polymer and at least one component selected from the group consisting of modified alkylcelluloses wherein alkyl is lower alkyl with 8 or less carbon atoms and with or without hydroxyl groups. Forming additive (c) and Other formulation additives (d) consisting of solvents, thickeners, odor shields, preservatives and pH adjusting agents, in combination with the components (a), (b) and (c) in an amount of up to 100% by weight (each of the above) The proportion of the components is based on the total weight of the bait emulsion composition), a stable insecticide bait emulsion composition which is a mixture formed by mixing insect bait and pesticide with an emulsion forming additive and other formulation additives. 12. The stable insecticide bait emulsion composition of claim 11 wherein the emulsion forming additive is carboxy polymethylene and hydroxypropion methylcellulose. 12. The stable insecticide bait emulsion composition of claim 11 wherein the pesticide is penadien-3-one substituted amidino hydrazone which is substituted amidino hydrazone. 14. The 1,5-bis (α, α, α-trifluoro-p-tolyl) -1,4-pentadien-3-one of claim 13, wherein the pesticide is a substituted amidino hydrazone. 5,6,7-tetrahydro-1H-1,3-diazepin-2-yl hydrazone. Stable insecticide bait emulsion composition. Suitable insect bait comprising animal protein source as intake stimulant of 2 to 10% by weight, vegetable protein source as up to 10% by weight of intake stimulant, 10 to 30% by weight of carbohydrate source and 1 to 20% by weight of lipid. a), Pentadien-3-one substituted amidino hydrazones, chloropyrifos, carbamate, pyrethroids, chlorinated hydrocarbons, fluorinated aliphatic sulfonamides, boric acid, insect growth inhibitors and avermectin B ₁ [80% avermectin B _1a (5-O-Dimethylavermectin A _1a (R = C ₂ H ₅ )) and 20% R _1b (5-O-dimethyl-25-de (1-methylpropyl) -25- (1-methylethyl A mixture of microorganisms derived from a mixture with avermectin A _1a (R = CH ₃ )) and 0.25 to 0.25, an amount effective to eradicate the target population of insects when applied to the target habitat. 20% by weight of pesticide (b), 0.3-2.1 wt% emulsion gel comprising a crosslinked polyacrylic acid polymer and at least one component selected from the group consisting of modified alkylcelluloses having alkyl having 8 or less carbon atoms and lower alkyl with or without hydroxyl groups. Forming additive (c) and Other formulation additives (d) consisting of solvents, thickeners, odor masking agents, preservatives and pH adjusting agents, in combination with the components (a), (b) and (c) in an amount of up to 100% by weight (each of the above components) Ratios are based on the total weight of the emulsion composition), comprising applying a formulated stable emulsion, a mixture formed by mixing insect bait and insecticide with an emulsion forming additive and other formulation additives, to the trajectory or habitat of the insect, Purpose To eradicate insects. The stable insecticide bait emulsion composition of claim 4 containing starch. 13. The stable insecticide bait emulsion composition of claim 12 containing starch.