Subtitle

More is better!

Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC170689/pdf/aem00013-0145.pdf

Hand-crank turns pile for aeration

(1:25 optimal)

Hand pump re-circulates fluid from the bottom.

>

CCAT Box Duchamp de Loo

Sun Mar Phoenix Biolet

(Image source: Wikipedia) (Image source: www.compostingtoilet.com) (Image source: www.biolet.com)