Hello RangerBull, Sure wish I could help you out but I don't know the answer. I would call Grubco and ask them, They are nice people and I think they will share the answer with you. I tried raising redworms this summer and have had bad luck with that. It get's so hot here in savannag Ga. in the summer I lost about half of my worms the first of july and had to move the rest inside to save them. Good luck on you venture. Jimmy S.