Product review (5 stars): Our cats love them and they work pretty well
Our long haired cat seems to really enjoy these every day and it greatly reduces her hairball issues.  She'll still have a few problems now and then, but it's not as bad as it was.  The short haired cat, who doesn't like treats, also likes these so they must taste pretty good.  Also, I got a set and they came in the grocery store display box, which I'm sure the cats really appreciate.