Treat your pup to Adam's Flea & Tick Collar for Dogs - proven to repel mosquitoes* and kill adult fleas and ticks for up to 6 months! Enjoy 12 months of protection with two collars per tin - no more mess of topical treatments that only last one month. Adjustable and water-resistant for superior coverage, this collar will transfer the active ingredients to your pup's hair and skin on contact. Protect your pup today!