I don't know.....in areas where I go, pueblos in extreme poverty, I don't see trash except on the perimeter. Where their homes (squalid shacks) are, it is clean. Yes, it smells of urine, but the dirt around the homes, one within inches of the other, is clean. They live in such close quarters- and I don't imagine there is trash pickup, as I can't even drive my car there- what should they do with the waste, plastics, tin cans, garbage? Perhaps that is the explanation of the trash on the perimeters.....it's where the garbage truck passes. I do know that every little thing of use, plastic bags, containers of any sort, even bones (from the few occasions when chicken or meat can be purchased), finds a purpose, as there is no money to buy such things.
I have done this type of work for about 15 years, here and in Africa. When I first started, I had all the answers, as I thought I knew best. Now, I have only questions and compassion. The more I experience, the less I know.
Lindsey