VALCORE maintains working backyard composting bins at the site and conducts free composting classes.

The 2011 Composting Classes schedule is May 7th, June 4th, Oct 1st, and Nov 5th. Earth Machine Compost Bins are available to class attendees at the cost of $40 for Vallejoans and $75 for non Vallejo residents. 

VALCORE also maintains two backyard composting bins. Yard waste and kitchen wastes are added periodically. Each bin is at a different stage of composting. Finished compost is available for those who want to dig it out. An active earthworm bin is located at the corner of the office building. Kitchen wastes are routinely added and vermicompost is harvested as needed.