Description
CrossBlock II is a topical flea treatment for dogs that kills adult fleas as well as their eggs and larvae. It contains imidacloprid and pyriproxyfen, and starts killing fleas within 2 hours, providing a full month of protection. CrossBlock also prevents re-infestation of fleas by stopping fleas from reproducing. The waterproof formula comes in easy-to-open, individual dose applicators. This product contains a 3 month supply for dogs 3-10 lbs, 11-20 lbs, 21-55 lbs, & Over 55 lbs. CrossBlock II i
