I have my mealworms in some quaker rolled oats and I had some of this left over, http://www.drugstore.com/qxp188421_333181_...anilla_6_lb.htm I put 3 rounded scoops in with some quaker rolled oats. I already put it in with my beetles and they are not seeming to die from it, i wonder if the mealworms would do good on it? let me know before I use this stuff. The only thing i can think of that could possibly be detrimental to their health and molting is the calcium, but is that enough to kill them?
Even if the feeders don't die, my concern would be for the reptile you're feeding them to. I would personally dump the stuff. The enzymes found in there may actually be harmful to reptiles. Perhaps you'd want to ask a vet or nutritionist about the effects of the ingredients.