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How To Build a Worm Composting Bin

It's easy to throw stuff away, but the 230 million tons of trash generated annually by Americans take up a lot of space. A worm composting bin reduces the garbage you send to landfills and helps your plants thrive too.


  • Step 1: Worms like bread, fruit, vegetables, and even coffee grounds, but they won't eat meat, dairy, or oils. Bury your vegetarian food scraps in the newspaper about once a week, choosing a different location each time.
  • Step 2: Situate the bin in a well-ventilated area, such as a garage or laundry room. Storing it close to the kitchen will remind you to feed your worms.
  • Step 3: Place the bin on top of the four plastic blocks in the plastic tray.
  • TIP: Two generous handfuls of worms can compost about three pounds of food scraps per week. Scraps in small pieces are easier for worms to digest.
  • Step 4: If the bin gets too wet, add dry newspaper strips. If it gets too dry, spray on a little water.
  • FACT: If every household in America kept one pound of worms, 10 million tons of trash could be turned into rich fertilizer each year.
  • Step 5: Harvest the worm castings every few months, and start your worms off fresh with a clean bin of shredded paper. Happy worms are productive worms, so take care of them, and they'll take care of you and your composting needs.
  • TIP: You can either collect worms yourself, or order them online.
  • Step 6: Add the worms to the bedding, then cover the newspaper and worms with a piece of moist cardboard cut to fit the bin.
  • Step 7: Drill about 30 holes in the lid, for ventilation.
  • Step 8: Use the 1/16-inch drill bit to drill holes around the top edge of the bin, spaced about 1 inch apart.
  • Step 9: Tear the newspapers into 1-inch-wide strips.
  • Step 10: Soak them in water, and wring them out so that they're moist, but not dripping wet.
  • Step 11: Throw a couple of handfuls of dirt into the bin. This provides grit to help the worms' digestion.
  • Step 12: Fill the bin with 3 to 4 inches of the moist newspaper.
  • Step 13: With the quarter-inch drill bit, drill about 20 evenly spaced holes in the bottom of the bin for drainage.

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