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Wormland wormbin instructions

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Instructions for Building Worm Bin Kids Alone

Steps for Making The Worm Bin

Materials needed: Two half-gallon waxed cardboard juice or milk cartons, duct tape, scissors, and several sharp pencils/pencil sharpeners.


1) Obtain two half-gallon waxed cardboard cartons. Make sure they are rinsed out and dry before beginning to construct the worm bin.


2) To make the migration hole for the worms between the two cartons, a 2” by 3” hole is cut into the side of each container but in the exact same location along one of the sides, so that when the two cartons are lined up the holes match exactly. To make the hole, poke four holes in the shape of a rectangle in the same location on both cartons with a sharp pencil. This makes it easier to then cut out the holes with scissors.

Fig 1: The Migration hole is shown on the inside of the worm bin


3) Poke holes for ventilation and drainage along the sides and bottoms of both cartons. Three holes along the middle and five along the bottom is sufficient.


4) Flaps are then cut into the topside of each carton, i.e. the side with the largest surface area and with the label saying “Humboldt Creamery”, etc. The same method is used as for cutting the migrations holes. Poke one hole in each corner of the top side of the carton, but cut along only three of the four connecting holes to make a flap instead of a rectangular hole.


5) The two cartons can now be connected with duct tape. Tape the top and bottom of the cartons together lengthwise on both sides. If using cartons with flap dispensers instead of screw top spouts tape those shut as well.


6) Finally, use more duct tape to make tabs for the worm bin’s flaps


The bin is now ready to be filled. Bedding and organic material the worms will help decompose are placed in both of the connected cartons. Common bedding materials include damp shredded newspaper, grass clippings, leaves, and small amounts of dirt or manure. Allow bedding to sit for about a week before placing the worms in their new home. Commence composting!