my only complain is that my dogs have some gas. When I used to feed them taste of the wild, and natural balance I dont think I ever noticed it. but with Diamond naturals my crew poops once and night, and once in the morning, on the other foods Ruckus would poop soemtimes 4 times a day. Diamond Naturals does not upset Ruckus's belly either. He has chronic colitis and seems to do well on diamond naturals.