I use two plastic tubs from home depot called tuff boxes, they are perfect, heavy duty black plastic, 20x30x14 inches deep with molded in rib supports and handles. peat moss and composted manure from lowes. it will take a couple days to soak the peat moss good at first. I use about 9 inches of soil, and some use much less. I keep them in the shop, and feed them chicken laying mash, the crumbled up type, and also keep newspaper or cardboard on top of them, and keep this wet. they love to eat the paper and cardboard once it gets soft enough. do not mix the food into the soil, just put it on top. I killed alot of worms by covering up some food, by just digging around in there. I feed them almost every day, they can eat plenty, if there is a good population in there.