RM (Rubber Maid) Bin

This bin is a plastic tub with airholes drilled in it:  

Pro’s:

• Cheap and easy to make.
• Does not dry out easily.
• Easy to fit in any space.

Con’s:

• Easily gets excessively wet, resulting in anaerobic conditions.
• High maintenance, because of above.
• The worms have to be disturbed when harvesting the compost

FT (Flow-Through) Bin

This bin is made with a false bottom: 

Pro’s:

• Allows for adequate air flow.
• Can be made out of various materials.
• Difficult to get excessively wet
• Easy to harvest compost
• Compost can be harvested without disturbing worms.
• Can be custom built.

Con’s:

• Can dry out quickly, especially if made out of wood.
• Takes some DIY experience or a prefabricated system.
• Uses more space than an RM bin.

 The Worm Inn

The Worm Inn is a prefabricated, Flow-Through, vermi-composting system which consists of a breathable, heavy duty bag with a zippered mesh top and drawstring bottom which is hung on a frame. Buy one HERE.

Pro’s:

• Very easily assembled.
• Compost is easy to harvest without disturbing the worms.
• Adequate airflow.
• Visually appealing.

Con’s:

• Not a very good space saver.