Seresto is a non-greasy, odorless, easy-to-use collar that kills fleas and repels ticks for 8 months. The collar has a continuous supply of active ingredients that are released in low concentrations to ensure reliable protection. It can be used in dogs 7 weeks and older and in cats 10 weeks and older. It is water resistant and is available in three sizes which are is large dog, small dog, and cat. Call or stop by and talk to us about it today!