Advantage II for cats is for use on kittens 8 weeks of age and older and weighing 2 lbs. or more. Advantage II kills fleas through contact, effectively breaking the flea life cycle - so you can help protect your cat from the fleas you see and the ones you don't. Advantage II uses two active ingredients for flea prevention and treatment. Imidacloprid kills adult fleas on the animal. The insect growth regulator pyriproxyfen inhibits development of immature stages, effectively breaking the flea life cycle. For fleas only.<br/><br/><p><p>Directions:</p><p>1. Remove one applicator from the package.<br />2. Hold applicator tube in upright position. Pull cap off tube.<br />3. Turn cap around and place other end of cap back on tube.<br />4. Twist cap to break seal, then remove cap from tube.<br />5. Part the hair on the neck at the base of the skull until the skin is visible. Place the tip of the tube on the skin and squeeze the tube to completely empty the contents directly on the skin. Do not get this product in your pet's eyes or mouth. <br />6. Discard the empty tube as described in "DISPOSAL".</p>