Holes are needed for drainage and aeration. These provide aeration and keep worms in the bin. Bedding provides space for the worms, absorbs excess moisture and can improve the quality of the finished compost. Peat moss is the best choice, because it's easy to use and it improves the texture of the finished compost. Worms need a moist environment to thrive.
Soil provides minerals and grit used in worms' digestive tract.
Red worms can be purchased at bait shops, worm farms, or catalogs. A WORM BIN Prepare the bin before your worms arrive. Don't worry if your measurements and methods are not exact. Put the vents in the holes. The container should now be about half full.