Innovative technology for your dog Lead the pack with long-lasting protection Seresto is an easy-to-use, non-greasy, odorless collar that kills and repels fleas and ticks for 8 continuous months. The active ingredients in Seresto are stored within the collar, released in low concentrations and distributed over your dog from head to tail for 8 continuous months. As active ingredients wear off over time, the collar continuously replenishes the skin and coat with a new supply. Fleas and ticks are killed through contact - no biting required. Get the performance you expect from a topical treatment in an economical collar for convenient, effective 8-month protection against fleas and ticks. Seresto also aids in the treatment and control of sarcoptic mange and kills lice. Why Choose Seresto The Seresto collar is non-greasy and helps avoid the hassle of applying monthly treatments. Seresto works through contact, killing and repelling fleas that can cause painful bites. Seresto kills and repels ticks, too. And if a tick is repelled, it can't attach and transmit diseases. The Seresto collar does not interfere with other leash collars and can easily be worn simultaneously. Is Seresto the right choice for your dog? Outside dog? Choose Seresto. Inside dog? Choose Seresto. Worried about fleas AND ticks? Choose Seresto. And if you dislike the inconvenience of applying monthly topicals, choose Seresto. After all, just one collar every 8 months is more convenient to give than applying a monthly topical like Frontline Plus. For dogs that don't like to take pills like Bravecto, NexGard or Comfortis - and owners who don't like to administer them - Seresto provides 8 continuous months of effective, flea and tick protection. Even better? Unlike monthly oral products, Seresto does not require a prescription and doesn't require a bite for the fleas and ticks to die.