I have to say the new Pedigree Dentastixs are a rip! My dog got some as a present from a relative and he finished it in like three minutes...tops! I don't see how they can do any good for teeth when he didn't have to take time to gnaw or barely even chew. He is not known to gulp his bones, he takes him time. I could tell he was trying to take his time with that bone too and there was just no way he could have went any slower. There is nothing to them. Maybe they would be good for a smaller dog, but for large or even medium sized dogs they seem to be a rip off to me.