Pour-on or spot-on parasiticidal composition containing cypermethrin

Claim 2

A pour-on or spot-on method of eradicating or controlling ectoparasites in a non-human warm "blooded animal by direct application to a specific skin area of the animal of an ectopara- 5 siticidal amount of cypermethrin in a solvent medium comprising at least 5Cff» by weight of one or more alcohols of the formula: H0-(CHo -CH- -0) -R (II) d d m wherein m is the"integer 1, 2 or 3; and R is lower alkyl.

Claim 3

A method as claimed in claim 1, wherein m is 2, 10

Claim 6

A pour-on or spot-on method of eradicating or controlling 15 ectoparasites in a non-human warm blooded animal by direct applica tion to a specific skin area of the animal of an ectoparasiticidal amount of cypermethrin in a solvent medium comprising at least 50?'' by weight of 2-(2-butoxyethoxy) ethanol.

Claim 7

A pour-on or spot-on method of eradicating or controlling 15 ectoparasites in a non-human warm blooded animal by direct applica tion to a specific skin area of the animal of an ectoparasiticidal amount of cypermethrin in a solvent medium comprising at least 50?'' by weight of 2-(2-butoxyethoxy) ethanol.

Claim 8

A method as claimed in claim 5» wherein the medium 20 comprises at least 80^ by weight of 2-(2-butoxyethoxy) ethanol.

Claim 9

A method as claimed in claim 5 or 6, wherein the mediiim consists essentially of 2-(2-butoxyethoxy) ethanol.

Claim 12

A method as claimed in claim 9, wherein the amount is 1 to 50 mg/kg. 5

Claim 13

A method as claimed in any preceding claim, wherein the animal is a sheep. A method as claimed in claim 11, wherein the ectoparasites comprise sheep lice. A method as claimed in any preceding claim, wherein 10 the specific skin area comprises the back of the animal. A pour-on or spot-on method of eradicating or controlling sheep lice by direct application to a specific skin area of the sheep of an ectoparasiticidal amount of cypermethrin in a solvent medium consisting essentially of 2-(2-butoxyethoxy) 15 ethanol. 15* A pour-on or spot-on method of eradicating or controlling ectoparasites substantially as herein described. A pour-on or spot-on method of eradicating or controlling ectoparasites substantially as herein exemplified in 20 example 1. A pour-on or spot-on composition for eradicating or controlling ectoparasites in a non-human warm blooded animal, which composition comprises cypermethrin in a solvent medium 25 Fat least 50% by weight of ne or more alcohols 01 the formula: H0-(CH_ -CH„ -0) -R * (il) \ 2 2 'm v -II- 1T-8FEB1985 wherein m is the integer 1, 2 or 3; and R is lower alkyl. „ . >j • ^ E \ z*^ A corrposition as claimed in claim 17, vaherein m is 2. either A composition as claimed in ./ of claims 17 or 18, wherein the medium corprises at least 80% by weight of said alcohol (s). A composition as claimed in any of claims 17 to 19, wherein the medium consists essentially of said alcohol(s). A pour-on or spot-on composition for eradicating or controlling ectoparasites in a non-human warm blooded animal, which corprises cypermethrin in a solvent medium carprising at least by weight 50%/of 2- C2-butaxyethaxy) ethanol. A composition as claimed in claim 21, wherein the medium corprises at least 80% by weight of 2-(2-bubaxyethoxy) ethanol. either A composition as claimed in / of claims 21 or 22, wherein the medium consists essentially of 2- (2-butoxyethoxy) ethanol. A caipositicn as claimed in any of claims 17 to 23, wherein the cypermethrin is present in an amount of 1 to 30% by weight. - 12 -