Excellent piece. I've always thought it was a bad idea for municipalities to list specific items ("yogurt cups," "margarine tubs," etc) instead of just saying what kinds of plastics they take. My community distributed a flyer identifying these by number (eg, 1, 2, and 3) and explaining how to look for the number on the package. Not all yogurt cups are made of the same plastic; I switched brands of yogurt after the city released these guidelines.