PetSafe offers the indigo Fresh line of dog brush-free dental treats, made with the active ingredient hexametaphosphate (HMP). Fresh Floss Bones are long-lasting, textured chews that help deep clean teeth, according to the company. Their signature blue color comes from natural fruit juices, and the treats are grain-free and formulated with no artificial flavors, colors or preservatives. Fresh Dental Sticks are crunchy, low-calorie snacks without any artificial preservatives. Made with natural chicken and blueberry flavors, the blue sticks are especially designed to help scrub plaque and tartar away. The treats are wheat-, corn- and soy-free. Fresh Dental Sauce is a highly palatable dog food topping that helps clean teeth with every meal. Available in Sweet Potato and Hint of Mint flavors, it's a great dental option for small and senior dogs with sensitive teeth. The product is wheat-, corn- and soy-free, with no artificial flavors, colors or preservatives.