Same thing that applies everywhere.. (Score: 1) by insulatedkiwi@pipedot.org on 2015-04-21 14:06 (#7GVD) Garbage in.. garbage out. I'd be interested to see if they could be used in a larger scale system, obviously, straight garbage isn't particularly useful, but for example, if they were fed plant material like algae grown in the natural sewage processing farms as part of the process?It's not 1+1 =2 obviously.. and that probably wouldn't be enough alone.