Flipping it inside out every time would solve most of these problems. The scraps would come out and thinks would get a chance to evaporate. It's not a luxury p

Flipping it inside out every time would solve most of these problems. The scraps would come out and thinks would get a chance to evaporate. It's not a luxury product solution, sure. But if I was traveling to a poor country and everyone was doing it, I'd consider it clever and just go along with it.