Advantage for cats is a monthly flea treatment. Applied topically the treatment kills 98-100% fleas within just 20 minutes. The topical solution affects re-infesting fleas within 3 to 5 minutes, kills re-infesting adult fleas within 1 hour and flea larvae in your cats surroundings within 20 minutes of contact with the active ingredient. It kills both adult fleas, and larvae found on the pets body and in the surroundings. Advantage works on contact so fleas dont need to bite to be killed. The rapid acting, waterproof treatment prevents future infestations and flea multiplication for one complete month. Its safe for kittens and during pregnancy and lactation. Advantage is a monthly, spot-on treatment that protects your cat from fleas. Kills adult fleas and protects against re-infestation for a month Kills flea larvae and eggs Provides fast relief, stops fleas biting within 3 to 5 minutes of application As well as killing adult fleas, Advantage kills flea eggs and larvae to break the flea life cycle and protect your cat from re-infestation for a whole month. It provides fast relief, stopping fleas from biting within 3 to 5 minutes of application and kills the adult fleas and larvae within 20 minutes. Advantage is safe for kittens of any age, as well as pregnant and lactating queens.