Whether or not he passes it, could possibly depend on his size. i would be more concerned the smaller he is. If he is on the small side, you could possibly drop a drop of mineral oil on a cricket or two. however, i am not sure of whether or not that would be ok. mineral oil is not toxic, but still not 100% on it. i would feel safe with it. just make sure he is plenty hydrated, as that will help him pass it normally and easier. good luck.