Air Holes in the side of a new Worm Composting Bin.
Drill air holes in the sides of the storage tub. The storage tub will be the bin that the worms live in. Red Wiggler Earthworms need air holes in order to breathe (through their skin!). Six to ten evenly spaced holes on each side is enough. The worms will not crawl out the holes because they will die outside of their moist worm bedding.
For detailed instructions on making a simple worm bin read: How to Make Your First Worm Composting Bin