WORM FARMING - Keeping it going Worms need a moist environment. Check that their surroundings are damp, add water if needed. Add dry leaves or torn up paper products if it is too wet – the working area should be as damp as a wrung out sponge. Add food scraps regularly. Smaller pieces (no larger than 2cm) will be eaten more quickly and prevent odours. Worms cannot tolerate very hot or cold conditions (10-30° is ok). Small flies or white worms/bugs indicate the worm farm has become too acidic and you should add a sprinkling of lime to neutralise pH. Worms are omnivores and will eat almost anything, however there are some foods that are best left out of your bin.