Amazon.com : Hartz UltraGuard Pro Reflective Flea & Tick Collar for Dogs and Puppies, 7 Month Flea and Tick Prevention Per Collar, 1 Count : Pet Supplies
Hartz UltraGuard Flea and Tick Collar for Dogs and Puppies, 7 Months Protection, 1ct - Walmart.com
Amazon.com : Hartz UltraGuard Flea & Tick Collar for Dogs and Puppies - 26" Neck, 7 Month Protection : Pet Flea And Tick Collars : Pet Supplies
Hartz UltraGuard Plus FLEA & TICK COLLAR for Cats & Kittens • Prevents Flea Eggs | eBay