I had my cats on it too as they came from the Animal COntrol I like to keep them on the best food I can to get them healthy. Only my Meka can not stay regular - diareah she gets on it. The only thing I can figure it that it has dry milk in it and she is lactose intolerant I think. I liked the ingredents too. I had them on Nutro Natural for a bag worth and that was good with them but got a bag of Nutro Max Cat and they were both sick.... Picky Picky Picky! Right now it is Purina One and they love it and stay regular but I don't like all the ingredients as it has the "by product" in it about 5 ingredients down - better than the first ingredient but still not one I want in there at all... Glad you liked it - I did too. If I can find the light version of it I might try it with them because I don't remember it having the dry milk in it... Debbie