The Adams Flea & Tick Collar for Dogs and Puppies kills adult fleas and ticks and repels mosquitoes* for up to 6 months. Two collars in each tin provide up to 12 months of flea, tick and mosquito* control. This fit to size, adjustable collar is a convenience over messy topical applications that release a high initial dose and last for just one month. The collar is water resistant and the collar's effectiveness will not be impaired if water were to get onto it. Once the collar is applied, the active ingredient is transferred from the collar to your dog’s hair, and then to the skin. (*excluding California)

Adams Flea and Tick Collar for Dogs & Puppies 2 Pack