I use 10 gallon Rubermaid bins from WalMart. I use a about a 4 inch deep mixture of peat moss and cheap potting soil.
I feed mine corn meal and water them with rain water that I collect. I keep them on the floor of my shop and have a light shining on them to keep them in the bed. I feed mine once a week or so. About once a year I change out as much bedding as I can and use the old bedding feeding in my garden and pot plants.
I have more worms that I can ever use .