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Originally Posted by Paul Wheaton
I just heard a story from a guy in the peace corps. He said that in africa, some families would just do their business in the woods nearby. And then all sorts of people were dying for people-poop related diseases carried by the flies.
Does the lime and the sawdust keep the flies away?
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I believe it, about the flys and disease that is how nature works, as for the sawdust and lime,
It helps some, the biggest draw back to a true old style out house is that the pit is dug filled with mostly waste and left open to the air for the flies and such to come and go as they please,
Does anyone know how to culture bacteria in a lab? You give the bacteria water, a food source, and heat, (ie; you protect it from cold) that is what old style outhouses and most septic tanks do, they don't freeze to the bottom in even the coldest weather, so the germs reproduce and increase in numbers, than what happens if a flood washes over the outhouse, or a heavy fly season comes, or the septic tank backs up? Those germs are carried away to new loactions and disease spreads.
I had watched my grand mother empty the over full pit by fishing a bucket into the mess and dumping it on the ground, that really isn't the right thing to do, the building should moved to a new spot and the old pit should covered over with dirt and a new pit dug when it reaches about 1/2 full,
and improvment on the old style is what I was taught to call a 'pit privy' it is back filled as it is used, the waste is not left exposed to the air for flies to feed or reproduce on the waste, carbon is added to lock in the nitrogen and incourage the better composting microbes to grow because the air spaces held open by the sawdust or chopped leaves or what ever, earthworms will move into areas that have the righ ph and add air paths as well. More air better health conditions the key is to dry the waste, and keep oxigen available so the "good" germs can grow faster than the "bad" ones. While reducing access to flies. We have used this type of privy on our place, it works with as little as a post hole sized hole by just kicking dirt back in each time it was used.
In these days of modern travel, it is not uncommon for someone to be in a different country in just a few ours now, what if a traveler is exposed to a disease but not yet ill, if they use a "modern toilet" their waste with it's new and dangerous germs are deposted and mixed with what? Water, a food source and protected from extreme temps, and them dispursed throught out the city va the sewer lines, heavy rains can flood the sewer system and flush the new incubated germs into the water ways and out where it can be exposed to new people to infect, in a pit privy if a flood comes the germs are buried and liitle exposure should take place, these germs have been in a relatively dry location,
not exposed to flies, and in some cases the heat the is generated by the "good" bacteria ingesting the carbon and nitrogen will kill the trapped disease germs.
In a sawdust toilet system, with a above ground bin, there is also added freezeing action on the outer edges of the bin while the inner portions are cooked. If flooding washed away the bin's contence it has not been allowed to increase the population of disease germs because of the lower water content and temperature swings and increased oxigen levels.

I am teacher at heart....