UltraShield Flea & Tick Collar for Dogs from Absorbine Pet is a convenient one-size-fits-all flea collar for use on small, medium, and large dog. Do not use on cats. This is a waterproof flea & tick repellent collar for any season or weather. The UltraShield Flea & Tick Collar contains a polymer matrix of 4% deltamethrin, an insecticide that has proven to effectively control fleas and ticks for up to six months. Kills adult fleas and prevents new infestations. Comfort Fit Design from Absorbine. Maximum effectiveness may take 2-3 weeks to achieve after putting collar on dog. Excellent flea and tick collar for dogs that like to swim or spend time in the rain.
- One size, adjustable fits neck up to 26"
- Sustained release formula