The White Knuckle Dog Bone is cleaned and sterilized to make it good for indoor chewing. They are slow roasted in their own juices to bring out the delicious, natural flavor. Chewing bones is a good way to satisfy your dogs urge to chew, but it also cleans teeth by rubbing the plaque and tarter away. No added flavors, colors, preservatives or chemicals so you can rest assured your pup is getting a safe, natural and delicious treat.