Donkeys play an important role in this trade. The traders stockpile the human waste on their backs for the long journey to the market. The market here means villages outside Kano, where peasant farmers who cannot afford the cost of other forms of fertiliser use human excrement as an alternative. Husaini Audu, a peasant farmers in the village of Bunduawa, buys human waste for use on their farms. He says this makes his crops grow better.
Human waste is very good for farming.
I say this because people apply it on their farms and we see the result. For example, you can see that farm there, they applied it on the farm, but they did not apply it on this one. You can see that, that farm is more productive than this one here, the crops there are growing better. This is how we judge its effectiveness. Stench The cost of human waste, though, is not immune from inflationary trends he says.