Scott Pet Products Big Sky Split Antler Chews are made of all-natural antlers. These long-lasting dog chews help whiten teeth and freshen breath. Allergen-free and organic, they are safe for any dog. Antler Chews will not splinter, so they're safer for dogs than bones.Manufacturer model # AT188. All-natural antler chews for dogs whiten teeth and freshen breath Organic and allergen-free Will not splinter, so they are safer than bones