Interesting about the solar toilets. I'll have to check into that more. My impression in the past (and I looked into these pretty extensively some years ago for Ostrander Hut) was that whatever is being used, maintenance is really just taking out mostly raw effluent -- that there's very little composting.
Now that's OK. It's just that they're not truly composting and perhaps there's cheaper methods without all the surrounding composting tech. Ostrander essentially uses ammo cans (a more expensive version: Jonny Partners). They've got maybe 20 of them and they're just packed out at the end of the season.
When I worked at Little Yosemite in the 70s, we had chemical toilets which emptied into a big culvert with burlap over a grate. We'd let the, umm, effluent dry for maybe a week, then roll up the burlap and pack it out. Worked fine (well, except for the blue hands...).
But I don't keep up anymore and perhaps they do truly work as advertised... .
Thanks for the information!
g.
