Zuke's Z-Bones are grain-free, antioxidant- and nutrient-rich canine dental chews, according to the company. All-natural and made in the U.S., the chews contain whole-food antioxidants from sources such as alfalfa concentrate, rosemary, spinach and turmeric, along with breath freshener from natural sources such as clove, fennel, parsley and vanilla, the company adds. The treats feature a raised Z Ridge surface that is designed to scrape and polish the surfaces of teeth and encourage a longer chew time. Four sizes of bones are available, and flavors include Clean Apple Crisp, Clean Carrot Crunch and Clean Cherry Berry. The products come individually wrapped or in bulk boxes.