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)
"We're very satisfied with our Worm Wigwam and thrilled that we finally have
a vermicomposting system that works so well and so effortlessly. No more
plastic storage bins, no more stacking, and no more separating! The
flow-through design is ideal, and the crank makes harvesting a cinch. Thanks
to the Worm Wigwam, I now know how mediocre the other systems I've used
were. Our worms are consistently active and energetic, and our compostable
waste disappears like a ham hock in a piranha tank. One of our co-workers up
by Lake Almanor was so impressed by our Worm Wigwam that she bought one of
her own and raves about how well it's working for her.