Adams Flea & Tick Collar for Dogs & Puppies kills fleas and ticks for up to 6 months per collar. Our one-size-fits-all flea and tick collar ensures you are receiving top-of-the-line flea and tick treatment for small dogs, medium dogs, and large dogs alike. Additionally, with two collars per container, you are buying a year of headache-free flea and tick control for your dog. With the added benefits of repelling mosquitoes* (*excluding California) and being water-resistant, you know you are giving your dog the best when using an Adams Flea & Tick Collar for Dogs & Puppies. With 5% of fleas living on your dog and the remaining 95% living in your home or yard, it is important to also address the infestations that can be occurring in your home and yard. Adams products are designed to provide you with the power to prevent pests on every front. Try Adams Flea & Tick Home Spray, specifically designed to use inside your home, and Adams Yard & Garden Spray, designed to use outside in your yard.