Get your pup the best pest protection with the Hartz InControl Flea & Tick Collar for Dogs and Puppies 12 weeks and older. This collar kills flea & ticks, repels mosquitoes, and prevents flea eggs from hatching. The InControl collar with its unique patented “Comfi Fit” structure, achieves maximum comfort with the soft flexible texture, while the Dual Buckle System ensures the collar remains securely fastened. The Hartz InControl Collar is also water resistant so your playful pup can still enjoy swim time, baths, or playing in the rain. One 6 month collar provides consecutive protection for up to 6 months, from head to tail. The InControl Flea & Tick collar is One Size Fits All and is available gray and it is suitable for use on dogs and puppies 12 weeks or older.