DUAL DELIVERY OF METHOPRENE

摘要

Described is a method of preventing the propagation of fleas on a host dog or cat which comprises, providing adult fleas with nutrient blood which contains an ovicidally effective amount of methoprene, and exposing the adult fleas to ovicidally effective amounts of dermally deposited methoprene wherein said dermal deposit results from the secretion of methoprene from methoprene absorbed in the host's digestive tract.