BRAVO!!!
I'd always heard that human waste was one of the best fertilizers to use.
This invention wouldn't necessarily be limited to third world countries, because anyone that is into gardening and keeping a nice lawn would probably be interested, too. If combined with a gray water (from washing machine, sinks, bathtubs) system, where you re-route it to your lawn, it could make quite a dent in a home owner's yard maintenance costs,
besides the saving of our aquifers.
Hope this dude gets Big Time RICH!!!