For treatment of flea infestations on dogs and cats. Fast acting: begins work within 30 minutes. A single dose should kill the adult fleas. You can safely give another dose once a day. Safe for use in dogs, puppies, cats, and kittens 4 weeks of age and older and 2 pounds or greater body weight. Also safe in pregnant or breeding animals. Contains nitenpyram. 6 oral doses. [more info...]