Earlier quoted context omitted.
In parent's defense, every city has different rules sometimes different recycling vendors within a city. They rarely communicate these rules in an effective and routine manner.
I don't think I've ever understood the "what goes in recycling, what goes in organics" rules in any place I've ever lived. It's a total unknown. I put stuff in whatever bin makes intuitive sense and the man in the truck takes it away. Until either 1. the rules are explained in a sensible way or 2. the city starts fining me for putting something in the wrong bin, my behavior is not going to change.
[1] http://www.bafu.admin.ch/umwelt/indikatoren/08484/08653/inde...