Well it's not that great, but some do well on it. Ours did OK on it for about 6 months, then started to get red and itch, so we took them off it. That was a long time ago, before we knew better.
Mayhem was on it, but his stools stayed very loose the entire time and he went poo several times a day. After switching to Fromm, they firmed up and he goes only 2-3 times per day.