I had a little boy who I'm sure had food allergies but the parents would not do anything about it. They are terminated because I gave up! But we're talking about up the back, down the legs constant diarrhea. Is that the kind of poop you are talking about? I felt bad for the little guy, but I can only do so much to feed the children healthy foods here. The parents have to take the responsiblity to make sure their children are healthy in every other way, including figuring out if there are food allergies. Lactose, nuts, gluten, eggs, kiwi, strawberries, those are the usual starting places.