This is out of left field but some might find it interesting.  In 1975 I got sent to my first US army duty station in Seoul, South Korea.  It might as well have been on another planet.  MANY things were different and alien.  Eventually I got to like the place and almost feel at home there but...
     At the time the South Korean economy was still recovering from the war.  They weren't the industrial powerhouse they are today.  They did what they had to do.  One of those things was Honey Buckets and Honey Wagons.   
     If there was any sewage treatment in Seoul other than on compound I didn't see it.   People would do their business in clay pots... Honey Buckets.  In the morning big tanker trucks would come to every village and collect it... Honey Wagons.   Then the Honey Wagons would drive out into the country where farmers would use this human waste as fertilizer.  At the time it was a dirt poor country and they couldn't afford to waste anything. 
     Gross as that may sound it was also a common practice here in the United States until after WWII.  Our government became concerned about the spread of disease and stopped the use of "night soil." 
     One of the worst things imaginable was to get stuck in traffic behind a Honey Wagon in the Summer.  Yes, it was that bad! 
     I tried to look up if South Korea still uses Honey Buckets and Wagons but couldn't find anything definitive.  My guess is that they still do but are embarrassed about it so they don't talk about it.  I have a friend who lives there. I'll ask him. 
     Anyway,  you learned something today.  YW

I hear human manure can pretty pretty good for plants, though it has to be very well aged.