Introducing Crunch 'n Clean Cat Treats. Because caring for your cat’s teeth may be the key to a longer, healthier life. Blocks Tartar Out: Coated with patented DentaShield® to block tartar from forming. Clinically Proven. Blocks 3 times more tartar than regular crunchy treats.* 3 Flavors Cats Love: Savory Chicken, Bold Beef, and Rich Salmon. Contains vitamins and minerals, plus taurine. Less than 2 calories per treat. Veterinarian recommended. *Independent studies on file at The Hartz Mountain Corporation.