Sulfodene Scratchex Flea & Tick Collar for Dogs kills fleas and ticks, including ticks that may carry Lyme disease. Protection against fleas and ticks is achieved within a few days, and this collar will provide continuous protection for up to 5 months.
Simply replace this collar every 5 months to help prevent flea infestations on your pet and in your home. Works from head to tail even when wet. May be used on puppies over 12 weeks of age.