Seresto Flea & Tick Dog Collars treat and prevent ticks, fleas, larvae and lice for up to 8 months! This water resistant flea and tick dog collar instantly begins working to repel and kill fleas within 24 hours of application and ticks within 48 hours. It contains two active ingredients (Imidacloprid and Flumethrin) to provide dual action for long lasting protection. They effectively work together to maintain a continuous release, spreading the ingredients from the direct spot of contact over the other skin surface. The Seresto Flea & Tick Dog Collar is for use on dogs and puppies 7 weeks and older.

• Item Size – large