Barkworthies grade-A, naturally shed Elk antler burrs are dense, durable dog chews that will give your dog hours of chew time, beneficial vitamins and minerals as well as cleaner teeth! After they’re collected, they’re simply washed, cut and packaged. They also round any sharp edges to make them Extra safe for your dog. Barkworthies Elk antlers are highly durable and are will last hours or days for even the most aggressive chewer.