yeah plus the worms castings they use in most soil mixes are the castings from mealworms....as lug worms do not shed skin??? lol as i have leopard gecko's as U ALL KNOW lol i breed my own mealworms and boxes of worm castings hehhehe yeah its mealworm casting not lugworms castings but yeah they might be good for taking shit out of the soil i dunno if hey eat root also tat would be bad