Improved method for systemic administration of 2,4-dienoic acid-type insecticides to terrestrial mammals

摘要

A flea infestation in the hair coat of a terrestrial mammal, notably dogs or cats, is controlled, eliminated or prevented by the systemic administration to the mammal of a 2,4-dienoic acid, salt or ester insecticide in an amount that is lethal to the fleas and/or their eggs, yet not sufficient to maintain a concentration of the insecticide in the host animal's blood that would be lethal to the fleas or their eggs if the fleas or eggs were fed exclusively and directly on the blood.