EP1109448A1 - Appats hydrodynamiques pour insectes - Google Patents

Appats hydrodynamiques pour insectes

Info

Publication number
EP1109448A1
EP1109448A1 EP98938078A EP98938078A EP1109448A1 EP 1109448 A1 EP1109448 A1 EP 1109448A1 EP 98938078 A EP98938078 A EP 98938078A EP 98938078 A EP98938078 A EP 98938078A EP 1109448 A1 EP1109448 A1 EP 1109448A1
Authority
EP
European Patent Office
Prior art keywords
bait
pregelatinized
baits
gel
formable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98938078A
Other languages
German (de)
English (en)
Other versions
EP1109448A4 (fr
Inventor
Richard J. Brenner
Kevin Burns
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
United States, represented by S
Corteva Agriscience LLC
Original Assignee
Dow AgroSciences LLC
US Department of Agriculture USDA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow AgroSciences LLC, US Department of Agriculture USDA filed Critical Dow AgroSciences LLC
Priority claimed from PCT/US1998/015669 external-priority patent/WO2000005947A1/fr
Publication of EP1109448A1 publication Critical patent/EP1109448A1/fr
Publication of EP1109448A4 publication Critical patent/EP1109448A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/002—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing a foodstuff as carrier or diluent, i.e. baits
    • A01N25/006—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing a foodstuff as carrier or diluent, i.e. baits insecticidal

Definitions

  • This invention relates to a system for the control of insects, especially cockroaches, that includes hydrodynamic baits, that can be flowable or formable, and to a method for controlling insects, especially cockroaches, using the hydrodynamic baits.
  • Cockroaches are primarily tropical insects but some species have become widely disseminated through commercial activities and are now cosmopolitan.
  • the domestic species are omnivorous but are especially attracted to starchy or sweetened matter of various kinds; they also attack food, paper, clothing, books, shoes, bones, and dead insects. They are the orthopterous insects that are involved in the contamination of food.
  • house inhabitors include American (Periplaneta americana) , oriental (Blatta orientalis) , Australian (P. australasiae) , German (Blattella germanica) , brownbanded (Supella longipalpa (F.)), smokybrown (P.
  • a number of food attractants have been formulated with toxicants and aqueous gel binders to provide toxic paste baits for cockroaches.
  • Doi et al . (Chem. Abst . 107 :12915n (1987) ) controlled cockroaches with a paste containing boric acid, potato strach, corn strach, rice bran, molasses, water, and dye; Barson (Chem. Abst. 97 : 87017k (1982) ) used a mixture of boric acid plus porridge oats and iodofenphos gel; Peeters (Chem. Abst. 84:131508d (1976)) combined bakery wastes, boric acid, and water.
  • the proprietary roach bait station sold under the trademark, "It Works" (Bridgeport, CT) is advertised as containing boric acid, an attractant, and a humectant .
  • the water attractant can be in a container close to the bait or in a cup-like container built into the feeding station containing the bait .
  • the water can also be formulated into the bait using a water absorbent material such as a water absorbing polymer, especially an electrolyte polymer that does not contain natural polymer such as starch and contains synthetic carboxylate and hydroxyl groups, has a high water-absorption ratio and has excellent water-retaining properties as well as good strength after absorbing water.
  • the particular polymers are a saponified copolymer of vinyl ester (x) and ethylenic unsaturated carboxylic acid or its derivative (y) sold under the name Sumikagel ® S-50 and the polyvinyl alcohol-acrylate graft polymer.
  • Ong discloses a gel composition for the control of cockroaches that includes a gellant, propyl p-hydroxybenzoate, propylene glycol, fatty acids, an insecticide, high fructose corn syrup, isopropyl alcohol, methyl p-hydroxybenzoate and water where the gellant is a non- ionic surfactant .
  • the composition can be distributed so that it poses little or no hazard to humans or animals that may frequent the infested area.
  • Brenner et al disclose a hydrophilic gel bait which is deformable (non-flowable) that includes corn distiller's grains with solubles as an attractant for cockroaches .
  • This bait includes a humectant, insecticide, a gel former, and optionally a preservative. This bait provides both food and a relatively moist environment for cockroaches .
  • distiller's dried grains with solubles (DDGS, Agricultural Energy Corp., Franklin, KY) was attractive to 15 species of cockroaches including American cockroaches .
  • the DDGS is advantageously unattractive to nontarget mammals, in contrast to other baits such as pieces of fruit, bread, and beer (Jackson et al . , Am. J. Trop. Med. Hyg. 4:141-146 (1955); Ohio J. Sci., 61:220-226 (1961); Reierson et al . , Pest Control 45:40, 42-44 (1977); Fleet et al . , Environ. Entomol. 14:669-673(1985) or dry cat food (Appel et al., Environ. Entomol. 14669-673(1985)) which are attractive to mammals as well as cockroaches .
  • Bruey discloses a gel insecticide bait that is dispensed from a pressurized container which is made up of a pentadienone hydrazone as a toxicant, a fatty acid, a lower alcohol, a sugar, a gellant, water, a base and a hydrocarbon propellant .
  • the gel bait composition is an oil-in-water emulsion of a toxicant-fatty acid mixture in a corn syrup solution. It is sufficiently fluent to be dispensed from a pressurized package and the deposited form will retain sufficient bulk to be ingested by cockroaches over a long period of time.
  • Another object of the present invention is to provide an insect bait which continually charges and discharges moisture .
  • a still further object of the present invention is to provide an insect bait that is strongly attractive to well-fed insects and does not attract mammals .
  • Another object of the present invention is to provide a flowable bait which continually charges and discharges moisture .
  • Another object of the present invention is to provide an insect bait containing about 5-90% of an attractant, about 5-60% of a humectant and about 1-30% of a gel former.
  • a still further object of the present invention is to provide an insect bait that contains pregelatinized starch as a component of the bait .
  • a further object of the present invention is to provide a bait that contains glycerin and fructose syrup as the humectant component of the bait .
  • Figure 1 is a graph showing the hydrodynamics of a formable gel, PAYGEL Bait, containing about 27% DDGS, about 4.8% pregelatinized wheat gel former, about 47.3% corn syrup containing fructose (humectant) and about 4.8% pork gel (gel former) and about 12.7% water.
  • Figure 2 is a graph showing the hydrodynamics of a formable gel bait, PAYGEL Plus, containing about 24.3% DDGS, about 4.8% pregelatinized wheat gel former, about 47.3% corn syrup containing fructose (humectant), about 4.8% glycerin (humectant), 4.8% pork gel, and about 14.1% water.
  • Figure 3 is a graph comparing bait hydrodynamics of the flowable bait of the instant invention (DE Gel) , formable bait of the instant invention (DE Stat) , RAIDTM, COMBATTM and SIEGETM under dry (desiccator, about 15% relative humidity) , followed by ambient (laboratory air; approximately 40-50% relative humidity) , followed by humid (humidity chamber, approximately 100% relative humidity) and then finally dry again.
  • the weights are under various conditions and are compared to the initial weights of the bait .
  • Figure 4 is a graph comparing bait hydrodynamics of a flowable bait of the instant invention (DE Gel) , a formable bait of the instant invention (DE Stat) , RAIDTM, COMBATTM and SIEGETM under the same conditions as Figure 3 above .
  • the weights of the baits under the various conditions are compared to the previous weight of that bait .
  • Figure 5 is a graph comparing bait hydrodynamics of a flowable bait of the instant invention (DE Gel) , a formable bait of the instant invention (DE Stat) , RAIDTM, COMBATTM and SIEGETM under the following conditions: high humidity (humidity chamber, about 100% relative humidity) ; followed with ambient air (laboratory air, about 40-50% relative humidity) , followed by high humidity (humidity chamber, about 100% humidity) , followed by ambient air (laboratory air, about 40-50% relative humidity) , and last dry air (desiccator, about 15% relative humidity) .
  • the weights of the baits under the various conditions are a comparison with the initial weights of the baits .
  • Figure 6 is a graph comparing bait hydrodynamics of a flowable bait of the instant invention (DE Gel) , a formable bait of the instant invention (DE Stat), RAIDTM, COMBATTM and SIEGETM under the following conditions: high humidity (humidity chamber, about 100% relative humidity) ; followed with ambient air (laboratory air, about 40-50% relative humidity) , followed by high humidity (humidity chamber, about 100% humidity) , followed by ambient air (laboratory air, about 40-50% relative humidity) , and last dry air (desiccator, about 15% relative humidity) .
  • the weights of the baits under the various conditions are a comparison with the weight of the previous weight of that bait .
  • Figure 7 is a graph comparing mean cumulative proportion mortality with SEM by stage of American cockroaches exposed to the gel bait of the present invention, DE Gel bait, or SIEGE (American Cyanamid) from about 1 day to 10 days .
  • the DE Gel bait contained 0.5% Dursban XP as the toxicant and SIEGE contains 2% hydramethylnon as toxicant.
  • Figure 8 is a graph showing mean proportion mortality of combined stages and replicates from the data presented in Figure 7.
  • Figure 9 is a graph showing cumulative proportion mortality by stage on Day 10 from the data presented in Figure 7.
  • exemplary cockroaches include Blattella germanica (L . ) , Blattella asahinai Mizukubo, Supella longipalpa (F.) Cariblatta lutea lutea (Saussure and Zehntner) , Eurycotis floridana (Walker) , Ischnoptera deropel tifor is (Brunner) , Latiblattella rehni Hebard, Panchlora nivea (L.), Parcoblatta caudelli Hebard, ParcoJlatta divisa (Saussure and Zehntner) , Parcoblatta fulvescens (Saussure and Zehntner), Parcoblatta lata (Brunner), Blatta orientalis L., Periplaneta americana (L.), Periplaneta fuliginosa (Ser
  • the baits of the present invention are hydrodynamic and function well in harsh microclimates or dynamic microclimates, such as an outdoor environment subject to typical circadian influences of temperature and moisture . Under conditions of high moisture content in the air, the baits absorb water, then release it under more xeric conditions . Consequently, the baits continually charge and discharge moisture, which is one of the key components for arthropod survival . This release of moisture commonly occurs as temperatures rise with a concomitant drop in humidity. Higher temperatures increase the metabolism of cockroaches and other insects. Subsequently, they have an increased need for food and find a bait that is also a good moisture provider.
  • the baits of the present invention are developed against highly preferable food substrates so that it is strongly attractive to well-fed insects.
  • One formulation is flowable and can be delivered from a syringe- or tube- configuration and use of small-aperture adapters allows the bait to be placed strategically in inaccessible areas, providing a high safety factor. Any toxic material can be used as the active ingredient .
  • the toxicant can also be omitted and a non- toxic version can be used as an attractant for any sticky trap or live trap device.
  • the matrix is so hydrodynamic, it can be used as a substrate for biological control agents that commonly have high moisture requirements such as, for example, nematodes .
  • the formable bait can be placed in any type of known bait station. It can also be applied to a rough surface, such as for example any type of mesh screening, such as for example wire, vinyl, fiberglass, aluminum, etc.; and applied to any surface.
  • the baits contain a grain component, such as for example, corn distillers grain with solubles, that is high in protein and contains volatile food attractants .
  • a grain component such as for example, corn distillers grain with solubles
  • high fructose corn syrup and glycerin are included with pregelatinized starches in the bait formulation.
  • the use of a pregelatinized starch in the presence of glycerin forms a glycerostarch complex that greatly maintains pliability and adhesiveness of the material over time. This results in a bait that can be used under broad environmental conditions that include horizontal and vertical surfaces under changeable microclimates such as, for example, commercial kitchens characterized by stainless steel surfaces with high ambient temperatures and humidities .
  • Optional ingredients include a preservative to retard fungal growth, peanut butter to augment attractiveness and a protectant such as a bittering agent to provide a safety factor for exposed bait .
  • the attractant is defined as any substance or combination of substances which will lure orthopterous insects, especially a broad spectrum of cockroach species and other insects .
  • the attractants include, for example, corn distiller's dried grains with solubles, herein after referred to as C-DDGS, peanut butter, etc. and combinations thereof.
  • United States Patent No. 4,988,510
  • C-DDGS corn distiller's dried grains
  • Grain H includes a small quantity of wheat with the corn.
  • Humectants useful in the present invention include, for example, any hygroscopic substance or combination of substances that draw moisture from the air, allowing the bait formulation to remain relatively moist and pliable.
  • Sugars such as for example high fructose corn syrup, polyhydroxy alcohols such as glycerin, combinations thereof, etc. are exemplary of the substances useful for this purpose.
  • Some humectants, such as sugars, provide the further advantage of enhancing the attractiveness of the bait.
  • a most preferred humectant is a combination of glycerin and corn syrup wherein the corn syrup is 95% fructose (Archer Daniels Midland corn syrup) .
  • the toxicant can be any toxicant suitable for control of the particular insect, including biocontrol agents such as for example nematodes .
  • biocontrol agents such as for example nematodes .
  • chemical toxicants include organophosphates such as diazinon, malathion, chlorpyrifos, fenitrothion, prormiphos, fenthion, phoxim, acephate, methacrifos; carbamates such as, for example, baygon, propoxur, bendiocarb, dioxacarb, carbaryl ; natural pyrethroid such as for example pyrethrin; and synthetic pyrethroids such as, for example, sumithrin, tetramethrin, d-trans allethrin, and s-bio allethrin and metabolic inhibitors such as for example hydramethylnon.
  • the insecticide can be microencapsulated wherein the microcapsule is semipermeable in the absence of free water and impermeable in a wet environment . This prevents the loss of insecticide by leaching, but permits release when the capsules are physically crushed, as during the act of chewing by cockroaches.
  • microencapsulated toxicants By using microencapsulated toxicants, the only substantial release of toxicant in the insect habitat is within the alimentary tracts of the target organisms. If the threat of leaching is not a factor or the toxicant is not repellent, it can be mixed directly into the bait composition.
  • Gel formers for use herein provide an elastic, cohesive matrix that holds the attractant together in combination with other bait ingredients .
  • Any gelling agent that is not repulsive to insects can be used, provided that the resultant matrix freely releases the aromatic elements of the attractants .
  • useful gelling agents include pregelatinized wheat starch, found to be superior to all other starches; pregelatinized tapioca, pregelatinized potato, and pregelatinized corn starch. Corn is also found to be an excellent starch for a food attractant .
  • the starches useful in the invention include, for example, pregelatinized wheat starch such as for example PAYGELTM (A.E. Staley Co., Decatur, 111.
  • pregelatinized tapioca such as for example STA-SLIM 150TM (A.E. Staley) pregelatinized potato, such as for example STA-SLIM 142TM (A.E. Staley) pregelatinized corn starch such as for example MiragelTM etc.
  • STA-SLIM 150TM A.E. Staley
  • STA-SLIM 142TM A.E. Staley
  • pregelatinized corn starch such as for example MiragelTM etc.
  • the most preferred gelling agent is PAYGEL 290TM (Archer Daniels Midland. Keokuk, Idaho 52632) .
  • a second gel former is added. This second gel former includes any animal gelatin such as, for example, pork, beef, horse, etc. Pork gel (SBI Sanofi Bio Industries, Inc., Debuque, Iowa) is most preferred.
  • Preservatives are optional in the baits of the invention but are recommended for baits used in very humid or moist conditions.
  • Examples of preservatives useful in the present invention are 1,2- benzisothiazolin-3-one (PROXEL GXLTM, ICI Americas, Wilmington, Delaware 19897) methyl paraben (p-hydroxybenzoic acid methyl ester) and propyl paraben (n-propyl p-hydroxybenzoate) .
  • Other known fungistats would also be effective in increasing the longevity of the bait and retarding mold growth.
  • an effective amount of the toxicant is that level or concentration which will kill significantly more target insects when the bait is consumed than when an equivalent amount of bait is consumed without the insecticide present.
  • an effective amount of attractant is that which will attract more target insects to the bait than a control bait without the attractant.
  • the components of the bait composition will typically be present in about the following amounts: 5-90%, 10-60% preferred and 10-35% most preferred for the attractant; 0.1-20%, 5-60% preferred and 40-60% most preferred for the humectant; 1-30%, 1-20% preferred and 2-15% most preferred for the gel former; 0-50%, 0-10% preferred and 0-5% most preferred for the toxicant; and 0-5% preferred and 0-2% most preferred for the protectant .
  • the most preferred dry weight concentrations are:
  • a flowable bait about 28.5% for the attractant, about 5.2% for the gel former, about 45.6% for the humectant, about 0.5% for the toxicant, about 0.2% for the preservative, about 1.2% of a bittering agent and about 18.8% water.
  • For a formable bait about 32.2% for the attractant, about 9.6% for the gel former wherein about 4.8% is a pregelatinized starch and about 4.8% is an animal gel, about 43.0% for the humectant, about 0.5% for the toxicant and about 15.1% water.
  • a paddle-type mixer such as a Hobart paddle mixer for example, is charged with the gel former and the attractant .
  • a combination of the humectant and the toxicant are mixed and warmed to 50°C and then sprayed into the ingredients in the mixer.
  • Optional ingredients such as a preservative, an additional humectant such as fructose sugar, and a bittering agent, are added to the water.
  • Water or water containing the optional ingredients are added to the mixer with agitation. If peanut butter is used, it is folded in last .
  • the flowable bait can be dispensed from a syringe- or tube- configuration and the use of small-aperture adapters allows the bait to be placed strategically in inaccessible areas, providing a high safety factor.
  • the formable bait can be rolled and cut into any shape and size. It can be placed in any type of bait station or applied to any type of adhering surface such as for example applying it to a mesh screen, VELCRO,etc, and attached to any surface .
  • the formable bait is prepared as above for the flowable bait with the addition of granular pork gelatin to the paddle mixer along with the premilled grain H and PAYGEL.
  • the formable bait formulations are prepared using the following amounts:
  • PAYGEL Plus (PAYGEL +) formable bait contains about 24.3% grain H, about 4.8% pork gel, about 4.8% glycerin, about 14.1% water, about 47.3% high fructose corn syrup, about 4.8% PAYGEL and about 0.1% PROXEL.
  • PAYGEL formable bait contains about 27% grain H, about 4.8% PAYGEL, about 47.3 corn syrup containing fructose, about 4.8% pork gel and about 12.7% water.
  • the grain H is ground five times using a Straub Model 4E grinding mill.
  • the grain H, pork gel and PAYGEL are combined and manually mixed well .
  • the water and glycerin are combined and added to the high fructose containing corn syrup .
  • This liquid composition is slowly added to the dry ingredients with continuous mixing at ambient conditions .
  • ambient conditions are defined as laboratory air; approximately 40-50% relative humidity.
  • Controls are Farley's Grape Snack (FGS) (Farley Candy Company, Chicago, 111.) and Rat Chow. Approximately 0.75 grams of each bait was molded into tube shapes by extruding the preparation into a piece of tubing that is about 5.0 mm I.D. and about 2.0 cm in length.
  • Bait stations were made by passing a #3 insect pin of approximately 1 inch in length through about a 5 dram vial snap cap, with the snap cap functioning as a base for the bait station.
  • the PAYGEL Plus and PAYGEL baits were formed by placing the bait into a cookie press and squeezing the bait into an approximately 0.75 inch of about 0.25 inch I.D. TYGONTM tubing. The bait and tube were slid onto the map pin and the bait was pushed out of the tubing with a nail head, sliding the tubing over the nail leaving the bait stuck on the pin.
  • Farley's Grape Snacks were also presented using the same style bait station by simply sliding the snacks onto the pins .
  • rat chow As rat chow tended to crumble when attempting to place it on the map pin, it was presented by placing a piece of the chow on a 5 dram snap cap lid. Once the experimental baits were formed, they were weighed on an Ohaus model #GA200D electronic balance and placed in a Rubbermaid brand food container with a screen lid and allowed to age at ambient conditions for about 6 days before introduction. On about the 6th day of aging, 1 bait for each bait tested, was placed into each battery jar which already contained bait stations of FGS and rat chow, placed 48 hours prior, and 1 control experimental bait was placed into a screened container (which also contained control FGS and rat chow) in the same battery jar.
  • the hydrodynamics of the baits of the present invention were evaluated along with combat Superbait (2% Hydramethylnon) , Raid Roach bait station (0.5% Dursban) and Max Force gel (2% Hydramethylnon).
  • the baits are prepared as follows: Combat Superbaits and Raid Roach baits were removed from their containers and placed on standard bait pins (#3 insect pins pushed upwards through the center of a plastic cap taken from a 2-dram snap cap vial) .
  • the gel baits (DE Gel for the flowable bait of the present invention) were formed by squeezing a dime size drop of bait in the bottom of a souffle cup (about 29.5 ml) and placing the cup on bait pins .
  • the formable bait of the present invention was formed by rolling the bait onto wax paper and using a vial cap (screw type) to cut the baits out and then place them on the pins .
  • DE station baits were approximate in size to the combat and Raid station baits, except where cylinder shaped (See Example 2 for dimensions) .
  • the flowable and formable bait formulations used in this example are:
  • Formable bait about 30.2% Grain H, about 5.5% PAYGEL 290TM, about 5.5% pork gel, about 3.7% glycerin, about 15.1% water, about 0.2% PROXEL GXL, about 39.3% corn syrup containing fructose and about 0.5% chlorpyrifos.
  • Flowable bait about 25.2% Grain H, about 5.5% PAYGEL 290TM, about 8.7% glycerin, about 0.5% chlorpyrifos, about 0.2% PROXEL GXL, about 39.3% corn syrup containing fructose and about 20.6% water.
  • Baits were weighed on an Ohaus electronic balance (model #GA200D) at ambient conditions and left at ambient conditions in a screen-top container (Rubbermaid) for about 4 days. On about the 4th day baits were again weighed at ambient conditions and then placed in a desiccator. Baits were then removed from the desiccator at 2,4 and 6 hours and weighed quickly at ambient conditions . Weights were then taken daily until the baits became stable. When stability was reached, the baits were removed from the desiccator and left at ambient conditions . Bait weights were taken at 2,4 and 6 hours and then daily until stable. When stability was reached, the baits were placed in a 100% relative humidity (RH) chamber (Rubbermaid tub containing wet paper towels) .
  • RH relative humidity
  • the Max Gel lost the largest amount of moisture (retained 87% of original weight; Figure 3) and regained the least (95%, never reaching initial weight) .
  • the flowable bait of the present invention (DE gel) remains moist (95% or original weight) through desiccation and ambient regimes and the formable bait of the present invention (DE station) gains the greatest amount of moisture at high relative humidity (Figure 3) .
  • Baits were prepared as described above in Example 3. Baits were formed and initial weights taken as described above . After forming and establishing initial weights, baits were immediately placed in the RH chamber and then removed at 2,4 and 6 hours and then daily to quickly take weights at ambient conditions until stability was reached. Once stability was reached, baits were removed, weighed and then left at ambient conditions and weighed again at 2,4 and 6 hours and then daily until stability was reached. The baits were then placed back into the RH chamber where the weighing sequence was repeated. When the baits were stable, they were removed, weighed and left at ambient conditions for a final sequence of weighing at ambient conditions . This represents conditions similar to those found in a commercial kitchen or sewer. Results are shown in Figures 5 and 6.
  • EXAMPLE 5 Trials were conducted to compare the performance of the flowable bait (DE gel) of the present invention with SIEGE Gel bait (American Cyanamid) against American cockroaches, Periplanata americana .
  • the formulation of the baits of the present invention used in this example is: about 23.5% Grain H, about 5.2% PAYGEL 290TM, about 8.3% glycerin, about 0.2% Proxel GXL, about 37.3% corn syrup containing fructose, about 0.5% chlorpyrifos, about 18.8% water, about 2,000ppm Bitrex (aq.) and about 5% peanut butter.
  • Tests were conducted in large jars (battery jars) under 12 hours light and 12 hours dark at ambient temperature and humidity (indoors) with alternative food sources always available. Each replicate contained 30 cockroaches; 10 medium instar nymphs, 10 adult males and 10 adult females.
  • Roaches were chilled to facilitate sorting and counting into test jars that had the top inside 3 cm lightly coated with a mix of mineral oil and petroleum jelly (2:3 ratio, volume :volume) .
  • Cotton stoppered 5 dram water vials with water were added as well as alternative food sources consisting of Purina laboratory rat chow and FARLEY'S Grape Snacks (FARLEY Candy Co., Chicago, 111.) .
  • Cockroaches were acclimated for 2 days prior to the addition of the baits . On day 3 , about 1.0 gram of each toxic bait was applied to a souffle cup. A cup was then placed in each treatment jar.
  • Alternative food sources were replenished as needed.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Food Science & Technology (AREA)
  • Agronomy & Crop Science (AREA)
  • Insects & Arthropods (AREA)
  • Plant Pathology (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

L'invention concerne des appâts hydrodynamiques permettant de lutter contre les insectes orthoptères renfermant un attractif, un humectant et un agent gélifiant. Les appâts sont conçus pour fonctionner dans des microclimats rudes et/ou dynamiques tels que des cuisines commerciales et des environnements externes soumis aux influences circadiennes normales telles que la température et l'humidité. Ces appâts présentent l'avantage de ne pas attirer les mammifères.
EP98938078A 1998-07-28 1998-07-28 Appats hydrodynamiques pour insectes Withdrawn EP1109448A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1998/015669 WO2000005947A1 (fr) 1997-06-30 1998-07-28 Appats hydrodynamiques pour insectes

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EP1109448A1 true EP1109448A1 (fr) 2001-06-27
EP1109448A4 EP1109448A4 (fr) 2002-10-23

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JP (1) JP2002521396A (fr)
AU (1) AU757603B2 (fr)
CA (1) CA2338620A1 (fr)

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AU2013279603B2 (en) * 2012-06-21 2016-05-19 Basf Se Adjuvant comprising a 2-propylheptylamine alkoxylate, sugar-based surfactant, and drift-control agent and/or humectant
CN105792654B (zh) * 2013-12-06 2019-04-16 阿斯制药株式会社 害虫用毒饵剂

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AU757603B2 (en) 2003-02-27
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AU8668298A (en) 2000-02-21
CA2338620A1 (fr) 2000-02-10

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