Hartz® Dentists Best® Dental Rawhide Chew™ Beef Flavored. Freshens breath. DentaShield® coating. Reduces tartar formation by 80%. 8" Bone for large dogs 50 lbs+. Did you know Dogs suffer from tartar, gum disease, and tooth loss just like we do. DentaShield® reduces new tartar formation by bonding with components in your dog's saliva. The chewing action helps reduce tartar build-up, freshen breath and promote healthy gums. Treated by irradiation. U.S. Patent 5,618,518. Hartz® and other trademarks are trademark of The Hartz Mountain Corporation. Visit our website www.hartz.com.