When fed as directed, Milk-Bone Brushing Chews are safe to feed dogs daily. We're a company of pet lovers and there is nothing more important to us than the quality and safety of our products. Milk-Bone Brushing Chews underwent comprehensive quality and safety testing. This included extensive feeding trials, both in our own facilities and at third party facilities, and reviews by multiple leading external experts in the field of canine oral care. Digestibility was a key focal point of these trials.