All of our Odor-Free Bully Sticks are hand selected from premium, free-range, grass-fed cattle. These go through our proprietary (and all natural) process to help eliminate the odor. No additives or harsh chemicals are used. Next, our QA team ensures every bully stick is safe for your dog, by selecting only the best for our Odor-Free Bully Sticks. Redbarn No Odor Bully Stick proves to be a great addition for you and your pet to enjoy.