I have a two chambered tumbler and love it. But I several composting bins in the woods also but they are harder work to turn, plus roots grow up into them making at even harder to turn...

I'll tell ya the best thing for compost piles are fish. If you catch a few brim (blue gill) that you'd usually not be intersted in eating, a couple of them iin the compost bin will get it working real well... Sorry if I offended anyone by using live animals to promote composting but...

Hey, a brim in in the hole you plant a tomatoe in will also work wonders...

Bobert