Benko bones are free of liquid smoking and artificial preservatives using only natural wood smoke. These bones have all the marrow still intact inside as well as deliciously smoky bits coating the outside. Marrow bone are different texture than the tartar buster bones but are still great for dental health. When chewing a raw bone a dog must sit down and gnaw on the bone which helps to scrape off build up tarter or plaque. Feeding bones on a regular basis is key to excellent oral health. Benko Marrow bones are made in Canada using only high quality Canadian Beef.