Excessive scratching and constant irritation are signs that your cat might be infested with fleas. Carefully inspect the fur and lookout for tiny bugs jumping off your catss coat. Once you detect the fleas, itss time to take action. 2 MONTH Advantage II Flea Control for Small Cat is an ideal product for killing existing fleas and preventing future infestations. This topical medication is recommended for cats and ferrets. Once applied, its 3way attack formulation kills adult fleas, larvae, and eggs. By destroying the flea eggs and larvae along with adult fleas, the product eliminates all the life stages of the parasite. This drastically reduces the chances of future infestations. This flea treatment product is only for cats which weigh 5 to 9 pounds and are older than 8 weeks. 2 MONTH Advantage II Flea Control for Small Cat is completely waterproof and this particular pack contains two tubes. We highly recommend reading the precautionary statements and instructions before applying this product.