I raise mine in rubbermaid plastic tote boxes. I have a 7 gallon and a three gallon. Both have about three inches of peat moss and potting soil in them. I keep them on the floor of my shop so the fire ants cannot find them. I keep a light on them and they stay in the boxes nicely. I water them with rain water when possible In the summer when it gets dry I do use tap water but I let it sit in a bucket fr a few days to let the chlorine evaporate out of it. I keep them nice a moist and feed them an alfalfa based horse pellet which they really seem to like. I need to start another tote as these are getting crowded. The advantage of using the totes is that I can take one with me when I go to the camp and have plenty of worms for my stay. About once ever two years I fix up a tote with new bedding and transfer the worms to it. Then I use the old castings with some of my plants. Just mix it in with the potting soil. It makes great fertilizer.