Ectoparasiticidal formulations
AssigneeThe Hartz Mountain Corporation
InventorsW. Lance Hemsarth, Keith Goldman, Ellen McGarvey
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Abstract
The invention provides an ectoparasiticidal formulation which comprises an ectoparasiticidal agent, preferably the pyrethroid tetramethrin, as the pesticidally-active ingredient, together with a crystallization inhibitor selected from the group consisting of alkyl-substituted pyrrolidones, and optionally, one or more organic solvents and/or co-solvents. Preferably, the crystallization inhibitor is N-octyl pyrrolidone, and the organic solvent, if present, preferably comprises diethylene glycol monoethyl ether. The ectoparasiticidal formulation surprisingly yields a significantly enhanced speed of kill. Methods for manufacturing the formulation, as well as methods for treating animals infested with ectoparasites, are also disclosed.
Claims10
A method of treating an ectoparasiticidal infestation on an animal, the method comprising topically administering to the animal a ready-to-use composition by deposition of the composition on the animal's skin, the composition comprising:
- (a) the pyrethroid tetramethrin in an amount from about 1% to about 20% by weight of the overall composition, (b) N-octyl pyrrolidone as a crystallization inhibitor in an amount from about 1% to about 90% by weight of the overall composition, and (b) at least one organic solvent, wherein said composition excludes neonicotinoids, chlorantraniliprole and cyantraniliprole.
A method of treating an ectoparasiticidal infestation on an animal, the method comprising topically administering to the animal a ready-to-use composition by deposition of the composition on the animal's skin, the composition comprising (a) the pyrethroid tetramethrin in an amount from about 1.0% to about 20% by weight of the overall composition, (b) N-octyl pyrrolidone in an amount from about 1% to about 90% by weight of the overall composition, and (c) at least one organic solvent.
A method of treating an ectoparasiticidal infestation on an animal, the method comprising topically administering to the animal a ready-to-use composition by deposition of the composition on the animal's skin, the composition comprising (a) tetramethrin in an amount between about 1% and 20% by weight of the overall composition, (b) a crystallization inhibitor selected from the group consisting of N-methyl pyrrolidone, N-octyl pyrrolidone and N-dodecyl pyrrolidone in an amount between about 1% and 90% by weight of he overall composition, and (c) at least one organic solvent.
Dependencies are inferred from the claim text.