Revolution (Selamectin) Topical for Dogs, 20.1-40 lbs. (Red Box)

5-in-1 Protection: One simple-to-apply, monthly application protects your dog from fleas, ticks*, ear mites, heartworm disease, and sarcoptes mites. Revolution has a 20+ year history working to protect tens of millions of pets. Easy-to-Apply: Revolution doesn't require gloves or separation time. It's quick-drying, pre-measured, and applied topically on the back of your dog's neck. Wash hands after use. Year-Round Heartworm Disease Prevention: When given monthly, Revolution prevents the development of adult heartworms.