Revolution Stops fleas. Prevents heartworms. Even the tiniest of pets can be fiercely protective of their owners, but all dogs need our help to protect them from parasites. Revolution® (selamectin) provides that help. Just a spot once a month provides protection against fleas, heartworms and other parasites. Ask your veterinarian about Revolution. Prevents heartworm (Dirofilaria immitis) disease Kills adult fleas (Ctenocephalides felis) and prevents their eggs from hatching Treats and controls ear mites (Otodectes cynotis) Treats and controls sarcoptic mange (Sarcoptes scabiei) Controls American dog tick (Dermacentor variabilis) infestations