Vermicompost (also called worm compost, vermicast, worm castings, worm humus or worm manure) is the end product of the breakdown of organic matter by certain species of earthworm. Vermicompost is literally THE BEST nutrient-rich organic fertilizer and soil conditioner.
(from manufacturer website)
"This is the best vermicomposting system that I have seen to date. Anyone interested in vermicomposting to accomplish organic waste diversion, education and/or research should definitely consider the Worm Wigwam. Two years later and ours are still diverting tons of organic waste from the landfill."