Of course clean plastic is free and of course it doesn't have to be clean.
Win X 2 for JBII.
John was talking at the AGM I believe about how some of the post-consumer plastic smelled really nasty, especially from powered milk and how the food collected in the reactor and had to be cleaned out (as residue) later.
If you think dried milk caked-on food plastic is "clean" -- you can eat off of it. I'll pass. lol