Anyone out there use them? They are made of compressed Beef hide with Chlorhexidine to clean their teeth. My concern is that raw hide is a no no due to it not being highly digestible. One of the Vet techs at my Vets office said that since it's compressed in the CET chews, it makes it more digestible. Having compressed beef hide sitting in my pups stomach, doesn't make me feel any better than having large pieces sitting in it. So what's your opinion on the digestibility of the product?