There are different types of worm bins, but most have a number of layers. Note that it is easier to harvest worm casts from bins which have more shallow layers. The bins to the right are easily available.

Can-O-Worms

• Add worms and food scraps to the first working tray (level 2), which includes a vented lid
• Add more levels once the first working tray has filled with casts
  
• Fly and pest proof, it stands on 5 legs
• The tray system allows easy removal of worm casts without getting dirty hands
• Liquid fertiliser can be removed from the collector tray by using the tap
• Made from recycled plastic

Dimensions - Diameter 51cm and Height 74cm