Frontline Top Spot for Cats provides convenient and effective flea and tick control for cats and kittens. Frontline Brand Products are the #1 choice of veterinarians! Fast-acting. Long-lasting. Waterproof even after frequent bathing. Prevents re-infestations. Convenient to use. Controls fleas which may cause flea allergy dermatitis. Kills all stages of 4 major ticks, including those that may carry Lyme Disease.