Patent ID: 7517535

Claim:
A method for non-systemically controlling a parasitic insect selected from fleas and lice on a human or animal, said method comprising contacting said parasitic insect with an effective amount therefor of a compound of the formula: wherein n represents 1 or 2; Subst. represents halogen; A represents hydrogen or alkyl having 1 to 4 carbon atoms; and Z represents optionally substituted alkyl; E represents NO 2 or CN; and X represents —CH═ or —N═; wherein said contacting of said parasitic insect with said compound is effected by: a) topically applying said compound to the dermis of said human or animal; or b) contacting the dermis of said human or animal with an article containing said compound; and wherein said contacting of said parasitic insect with said compound does not result in said compound being systemically distributed within said human or animal.