Do not use pressure treated timber on the inside surface and the chemicals may be poisonous to worms. You can paint or stain the outside of the box but leave the inside untouched. Use shredded newspaper, cardboard or white paper. Use only black and white print and avoid colour sections, as dyes may be poisonous to worms. Place the shredded paper in the box.
Worms require grit to help their digestion.
Bedding material should be moist but not sodden. Prepare moist bedding two days before adding your worms, giving time for the initial heat to cool. Purchase worms from a fishing bait retailer or from a worm wholesaler. Feed your worm food scraps such as fruit and vegetable peels, crushed eggshells, tea bags and coffee grounds. Avoid using meats, milk products, oily foods and grains dues to odours and potential rodent and fly problems.