The Purina DentaLife Made in USA Facilities Large Dog Dental Chews are scientifically tested to reduce tartar buildup on your dog’s teeth. These chews are made with wholesome ingredients and are available in two different flavors: chicken and beef. The unique shape features eight distinct ridges and thousands of air pockets, making them a favorite among pet parents. The chew is also tested to help clean hard-to-reach teeth and is available in two different packages: 18-count and 24-count.