Good bedding must be organic absorbent and easy to work with. That's why Magic® Worm Bedding is made from a special sphagnum peat moss base an organic fibrous material which will hold up to twenty times its own weight in moisture. The spongy fluffy structure of Magic® Worm Bedding is maintained because it is made of millions of tiny fibers that also work to toughen and condition worms so they will live longer on the hook and catch more fish. Color darkens worms so they are closer to natural fish food colors. When the bedding becomes black it is full of worm castings and needs to be replaced. Then you can use this as an excellent natural potting soil. 4.5 lb. bag.