I kept mine as well. Perhaps they will grow out it...you never know. I've heard conflicting things. I threaten my oldest with it when he is sick. Just do as the pp suggested and label it dairy. I was actually told it passes through our system fairly quickly. It's the wee ones who have a hard time getting rid of it.
to 2 wonderful boys, Luke:
3-15-11, and our angel Vanessa: