Mr Calder produces and sells "worm tea" — essentially worm castings, or worm poo, in liquid form. It's becoming increasingly popular with farmers who are keen to move away from using synthetic ...
Worms can live for up to 10 years. Worms eat their own weight in organic waste, soil and minerals and excrete their own weight in castings daily, which makes compost and enriches the soil.
5. The castings (worm excrement) produced by the worms are harvested in a turn-filter, separating the worms from the castings. Worms can be used for bait or placed back in the cycle again.