Impure Recyclables and Trashy Trash

Good write-up here.

Did you know that if you put a cardboard pizza box in your recycle bin, you are guilty of contamination if there are remnants of grease on it?

In many communities, the same applies to unwashed peanut butter jars, dog or cat food bags, paper napkins, frozen food containers, and milk cartons.

Check the link. There's more to the story and a chuckle.