I went looking for more information about the toilets set up in the remote areas in Texas State Parks, since alternative sorts of toilets have been in use for a long time in this part of the system. They have interpretive information about these toilets, but apparently nothing is posted online. They use solar power to speed the process in some way, but it has been a long time since I was there to view these commodes and the attendant information. I suspect these are still too slow; an incinerator program might suit, if the expense didn't eliminate the desire for environmentally friendly johns.