My oldest is a nail biter. He has some sensory issues (from me - yay, lucky kid got the worst from both of us. ) He is always fine at home, but now that he is back in school, we are having upset stomach issues again. We CONTINUE to tell him taht he MUST keep his hands out of his mouth, because he is his own worst enemy, but with the sensory issues, he just can't seem to manage it. We've tried chewing gum, we've tried the terrible tasting stuff on his fingers - nothing helps. Just wondering if anyone else has dealt with this type of situation and if there was anything that did work.