Can SOIL MIX be recycled that been used for two years in my outdoor containers? I would like to reuse these many gallons of soil MIX, but not sure what to do it for the health and recycling of my mix. In addition to cow manure compost, it contains some topsoil, but it's mostly mix. It is November in Georgia and I have a compost bin with coffee grounds (Starbucks), and lawn and garden waste that is composting until Spring 2011. And, I also have a worm compost bin and my worms only eat ground fresh veggies, crushed egg shells, and fruit scraps. SURELY, between all these resources I should be able to recycle-refresh-renew this soil mix. Someone told me to throw it all out, and by fresh every year. That advice ain't sitting to well. That mix cost $$$.