"Best use for it?  Mix it with piss and shit and make compost!  Combine two waste streams and make something incredibly useful out of them.  It really is an ingenious and simple system.  The heat produced by composting kills any potential pathogens, and your bathroom smells like sawdust.  It would be great to find a way to implement it on an industrial scale rather than a few dedicated off gridders and tiny house dwellers.  Would cut down on fresh water usage too.  http://humanurehandbook.com/"