Buy Advocate for Cats at a cheap price online from us! Advocate for Cats is one of the most effective cat flea & heartworm treatments on the pet market. Advocate is made by Bayer who also produce Advantage for Cats. Advocate for Cats kills fleas, kills flea larvae, controls intestinal worms, controls intestinal worm larvae, prevents heartworm and controls ear mites. Advocate can be used on kittens from 8 weeks of age. You can purchase Advocate for Cats in a single dose, 3 packs, 6 packs and 12 packs for the best price to suit any budget.