Barkworthies odor free 6" bully sticks are virtually odor-free and 100% digestible, making them a great alternative to a traditional rawhide! as with all our bully sticks, they're a great way to give your dog an all-natural chew he's sure to love! Barkworthies odor free 6" bully sticks are an excellent size for small to medium dogs and stand up to aggressive chewers for a long time. These chews are made from free-range, grass-fed Brazilian cattle. Their unique shape and texture promote good dental health while helping prevent bad doggy breath.as With all of our products, Barkworthies are additive-free, chemical-free and preservative-free. Moreover, most Barkworthies products are single-ingredient chews, which means they're 100% healthy and safe.