tevrapet activate ii flea and tick collar for dogs, 12 months of flea and tick protection, repels mosquitos tevrapet your pets are family, and tevrapet helps you confidently care for your dogs — especially when it comes to flea and tick control. the activate ii flea collar for dogs provides vet-quality, whole-body protection without the expense of the leading brands. each one-size-fits-all dog collar works to kill fleas and ticks, including ticks that may transmit lyme disease, for six months. unlike most collars, the activate ii collar also repels mosquitoes. with two included collars this means your best friend will be contantly protected for 12 months. this flea and tick treatment for dogs also kills fleas, flea eggs, and flea larvae, helping to prevent flea infestations. this tick and flea treatment for dogs is both easy to use and waterproof, designed to provide a more secure fit.