Advocate for Cats under 4kg is a monthly topical treatment preventing fleas, ear mites, mange, lice and worms such as heartworm, hookworm, roundworm and whipworms. Advocate for Cats is fast acting, stopping fleas from feeding within 3-5 minutes of application and killing adult fleas and their larvae within 20 minutes. Easy to use, Advocate Cats is a simple spot-on treatment and is water resistant. Advocate for Cats under 4kg is available in a pack of 1, 3 or 6 monthly treatment