Only Advantage claims on its label that it kills 98-100 percent of fleas within 12 hours. Advantage also kills 100 percent of re-infesting fleas within two hours. One hour after exposure, all fleas had died. Since Advantage localizes in the superficial lipid layer of the skin, it remains effective after bathing or repeated water exposure. Treatment of pets with Advantage rapidly kills fleas and may reduce the incidence of this condition.
Advantage is water-resistant.
It continues to work even when your pet gets wet. Advantage works against fleas even after a shampooing, swimming or exposure to rain or sunlight. This is especially important for animals with skin conditions that require bathing and dogs that swim frequently. More importantly, the studies also show repeated treatments are not required because Advantage continues to work even when your pet gets wet. Advantage is so gentle it can be used on puppies as young as seven weeks and kittens as young as eight weeks.