Maggots!
...like dead leaves, sawdust and dry grass. Nitrogen materials include fruit, vegetable scraps and coffee grounds. The type of pile you construct depends upon the materials you have available to compost. Becky had lots of grass and leaves on a fairly large piece of property and the three pile system seemed the best to deal with a large amount of materials. We purchased our bin from the City of Los Angeles Bureau of Sanitation which hosts informative...