Kills fleas within 12 hours of application.,Kills all flea life stages including flea eggs and larvae to prevent reinfestation.,Safe and easy to apply.,Waterproof - remains effective even if pet gets wet.,Also treats prevents and controls lice infestations.Imidacloprid; 1-6-Chloro-3-Pyrindinyl) Methyl-N-Nitro-2-Imidazolidinimine Pyriproxyfen Igr And Other Ingredients