These are great! My cats go nuts for them. They can hear me grab the bag from the opposite side of the house and stampede toward me. Then if I take to long, they meow at me to hurry up. They do a pretty decent job at keeping their teeth healthy and their breath not so stinky.
My cats really love Greenies treats! They are a nice way to say I love them as well as a good training tool to get them to behave. I think the serving suggestions are a little crazy though, no cat needs over 10 treats a day!