Hartz Chew n Clean Dental Duo combines edible dental benefits and a chew toy all in one! This medium dog toy has a durable nylon outer shell is filled with a bacon-flavored treat. The treat portion contains DentaShield, a special ingredient that helps reduce new tartar formation. Dental Duo will help keep your dogs teeth clean and massages gums to provide overall better dental hygiene. This dog toy is suitable for mild to moderate chewers.