Advantage flea control works fast to kill fleas on dogs. It is a non-prescription (OTC) product. Advantage is a once a month topical flea treatment for dogs and puppies 7 weeks or older and cats and kittens 8 weeks or older. Advantage stops fleas from biting in 3-5 minutes and kills 98-100% of the fleas on dogs within 12 hours of application.
Advantage kills re-infesting fleas within 2 hours and lasts up to 1 month.Advantage also breaks the flea life cycle by killing flea larvae in your pets' surroundings. Advantage is water-resistant, so it kills fleas even after shampooing, swimming or exposure to rain.
Individual sensitivities, while rare, may occur after using any pesticide product for pets. If signs persist, or become more severe, consult a veterinarian immediately.