Roxie came to me on RC. I have never switched it except to go from puppy to the yorkshire version. I have wondered before if I should switch her. After discussing with some of the members here I decided to leave her on it. She's never had any digestive problems with it. It is also true that her stools are always consistant and very little smell. She only gets gassy when DH feeds her something from his plate she shouldn't really get (
). I'm not saying it's right for all dogs but it works for us.