FRONTLINE Spray Treatment for PetsFRONTLINE Spray Treatment for Pets provides long-lasting, effective control of fleas and ticks on your cat and dog. Frontline is ideal for severe existing flea and tick infestations. FRONTLINE Spray can be used on puppies and kittens 8 weeks of age or older and provides a quick and effective way of eliminating large flea and tick infestations already on your animal. FRONTLINE Spray is ideal for reducing and controlling fleas and ticks in multi-pet households. Great for the initial treatment of flea allergy dermatitis (FAD).