(Bayer) Advantage Treatment Spray for Dogs kills fleas, flea eggs, flea larvae, ticks, and lice. Contains 0.18% pyrethrins and 0.125% Nylar, an insect growth regulator which prevents the development of fleas for 100 days. Spray directly onto the dog's coat. May also be used on and around pet bedding. For dogs over 6 months of age.