Chemicals produced by garbage

Trash  is the a big problem every dat and a drama for cities, citizens do not know what to do with so much garbage they are a source of bad smells, infections and diseases, and enviroment pollution.
In my case I will do somo robots that two or three days in a week will help us to pick up garbage beside the garbage trucks and they all ready pick the garbage up.
I think it would be a very good idea and it would also cause global warming to not happen as many changes as those that are suffering now and that is hurting us.