Instructables

Step 5:

Why is the terracotta pots used?
We are using the terracotta pots to absorb the excess humidity and fluid which is secreted during the composting process.
 
Why are the Bottom holes?
The bottom holes are used to drip and pass the excess fluid to the collector Pot (Pot C).
 
What about mosquitoes or flies?
No mosquitoes or flies have appeared in any of my composters. The only insects appearing are fruit flies which live happily inside as long as their food is inside. Fruit flies help speed up the composting.