Phv Advantage II, Dogs 21-55Lb, 4PK

Once-a-month topical flea and lice prevention and treatment for use on dogs 7 weeks and older. Active ingredients: imidacloprid 9.10%, pyriproxyfen 0.46%. Kills fleas within 12 hours of application Kills all flea life stages Controls existing flea infestations on the dog and prevents further infestations Treats, prevents and controls lice infestations Fragrance-free Waterproof