Oscar and Hugo got a kind of treat we hadn't seen before in their last BarkBox. Yeti Dog Chews are supposed to be a sort of "cheese", made of cow milk, yak milk, salt and lime juice. They are very hard however, until you put them in the microwave. When heated in the microwave they puff up like popcorn. I did not find them to be as odor free as the package said but the pugs certainly enjoyed them.