I've heard that you can just clean them really really thoroughly with hot hot soapy water let dry and then if it were me i would wash and dry it a couple more times, not an expert though, that's just what i would do :)
i would like to hear how you guys take care of the crickets or bugs for you cham, i want to be prepared, also what they live in and what you feed them, i would love pictures :) thanks in advance