Give your dog long-lasting protection against fleas and ticks with a Seresto flea and tick collar. Unlike other flea and tick protection, Seresto flea and tick collars kill and repel fleas for eight continuous months. Seresto flea and tick collars are recommended by veterinarians, stocked by 8,000 vet clinics* and have been trusted by pet owners for nearly a decade. Seresto collars make your pet's comfort a priority by killing on contact, so pests don't have to bite your dog or cat to die. Existing fleas die within 24 hours of application. Re-infesting ticks die in as few as six hours, and tick infestations are eliminated within 48 hours of the initial application. Seresto collars are also effective against chewing lice and aid in the treatment and control of Sarcoptic mange. There's no prescription needed for Seresto collars. Seresto is a trademark of Elanco or its affiliates. *Elanco Animal Health, data on file