Small-scale worm bins should always have holes in them to allow air to flow and for draining purposes. A small-scale worm bin is usually covered with a lid to prevent the worms from escaping.

Mix the organic materials together and add the worms. It takes roughly 3-5 months for the worms to eat through the materials. At this time, you will notice very little materials and a hefty amount of compost. Once this happens, it’s time to harvest.