Well, I guess I've been doing it wrong from the start. On page 30 of the phone book it says they don't accept "unnumbered" plastics so if it had a # on it I've been recycling it. I wonder what difference it makes; a #5 yogurt pkg should be the same as a #5 narrow-neck or screw-top bottle. Go figure. (love Chobani Greek yogurt, Peach! )