Subpod is a unique invention which combines worms and composting underground. The Subpod has a series of holes throughout the box which allow the worms to move freely in and out. This means the surrounding soil is aerated and nutrients are delivered directly to the roots of the plants where they are needed most. The Subpod has been rigorously tested over the past 8+ years to allow for maximum efficiency of allowing worms to move freely in and out, while keeping unwanted pests out. At the top of the Subpod is a special mesh which allows air to flow in and out while being strong enough to keep out large critters such as rats, possums, and anything else living in your garden.  The Subpod Airflow Panel is a key design factor in the Subpod. It means that the compost is aerated easily which creates anaerobic/oxygen rich environment and no smelly compost heaps! Worm mobility is key for this product and is really what makes Subpod more advantageous over conventional systems. If something is added to the Subpod which the worms do not like, e.g. onions or chilies, the worms can move to the other side of the Subpod, or move out into the surrounding soil and move back into the Subpod when they like.