Seresto collars make it a priority to keep your pet comfortable by killing contact, so pests don't have to bite your dog or cat to death. Existing fleas die within 24 hours of application. Drip lice die in as little as 6 hours, and lice infestation eliminates within 48 hours of initial use. The Seresto collar is also effective in preventing chewing lice and helps in the treatment and control of scorpion droppings. The Seresto collar does not require a prescription. Seresto is a trademark of Elanco or its affiliates. *Elanco Animal Health, archival data
