I had Max on Nutro Natural but he was hacking up hairballs left and right - and by the way he is medium long haired and doesn't shed little hair everywhere like my short haired Meka does. HE just shedds where he lays - you can brush up a huge hairball from where he sleeps and lays.... So anyway - I changed him to Iams Adult and then I get my hands wet and pet him. It is amazing how much comes off with wet hands and he seems a lot cleaner. He is NOT hacking up hairballs at all and his stool is a lot better and not so smelly. Meka is on Nutro Natural still as that is the only thing that keeps her regular and not diarrea and she doesn't have problems with hairballs since she sheds everywhere!!!! Debbie