Hartz Chew n Clean Dental Duo combines edible dental benefits and a chew toy all in one! This durable nylon outer shell is filled with a bacon-flavored treat that will satisfy each dog's desire to chew. The treat portion contains DentaShield, a special ingredient that helps reduce new tartar formation. By chewing Dental Duos, it will help keep your dog's teeth clean and massages gums to provide overall better dental hygiene. This total package will pique your dog's interest and keep them engaged with the toy to deliver total chewing satisfaction. Available in a variety of sizes and colors, the Dental Duo dog toy fits every dog's chewing needs. This dog toy is suitable for mild-to-moderate chewers.