Greenies Treat Tub-Pak Canister is new and improved with an ALL NEW FORMULA. Reward your pet with fresh breath, clean teeth, and loads of vitamins and minerals with every delicious treat. Toothbrush shape, tapered shaft and contoured knuckle offer a better surface for teeth cleaning. Formulated with an optimal blend of soy and wheat protein for ease in digestion. Chewier texture helps reduce plaque, and keeps gums healthy.