I've heard a couple people mention recently that they feed this. Or add it to the food. I see it all the time in the stores but never even considered buying it. Looking up ingredients.... la la la.... their site isn't working.. going to mordy's... hey mordy has a new domain name yay! ...hm don't see it there either... this is what it looks like http://www.canvasbackpets.com/ShopSite/product34.html that doesn't help... a bit more... http://www.bullysticks.com/ROLLOVERDESCRIPTION.htm bah ... can't find the ingredients.