This is a little off topic but the talk of pooing in the furnace reminded me. We bought our first house in 76, it was an empty shell and I had to scramble to get it livable before winter- there was no time to get a septic system designed, approved, and installed. My wife was a good sport about the out house in the late summer but I knew she'd object in below zero weather. I bought a propane fired toilet from our gas company, it was called a "Destroilet" and I swear I'm not making that up. A fan would come on when the lid was opened and the air flow would push a little flapper back, indicating to the controller that the fan was working. Once your business was done and the lid was closed, a spark plug would start firing before the propane was injected. The burn cycle would last a few minutes and then the fan would run for a while to cool the bowl off. We had 2 problems with it-(1) the installer didn't read the directions and put a storm cap on the vent pipe causing a burnt sewage back draft. I read that part of the manual to the manager and made them come back and fix it. (2) We were in our early 20's and would often have 10-15 friends over on the weekend to party. After a few uses, the bowl wouldn't have time to cool down and a girl would go in there to pee, which caused it to sizzle and she'd scream. The next summer we installed a septic system and I sold the Destroilet by placing an ad in the NH Electric Coop news letter.