Worms are nocturnal creatures and are active only at night, when they drag leaves and grass down their tunnels to munch on. This little worm farm is great to see worms in action. To get them moving place your worm farm container in a paper bag or other dark spot to simulate after-dark. Not only are they fun to watch, you can have your worms recycle small amounts of food scraps by turning potato peels into nutrient rich worm castings (worm poo) which you can use on your garden!