Worms can eat their weight in soil each day.
Over 1 million worms may be present in one acre of soil, and these worms can produce 700 pounds of castings each day. Two thousand red worms in a worm bin can produce 7 pounds of castings in one month. Ask children to estimate how much food waste they produce each day. Worms do not have teeth. Their food is softened by moisture or by microorganisms which break it down.