The Seresto collar for dogs repels and kills ticks and kills fleas through simple contact, which means they don't have to bite your dog before they fall off and die. No biting means no itching and giving your dog the needed protection. If the parasites aren’t biting and sucking blood, there is a reduced risk of transmitting infections, which means you can put Seresto on and simply know that your dog is well protected. Seresto is a collar like no other! It works by releasing its active ingredients in controlled, low doses, allowing your dog to stay protected for up to eight months at a time. Odorless, water-resistant and effective against both fleas and ticks, the Seresto dog collar is the simple, easy way to keep your best friend protected for longer.