Disposable coffee cups are lined with a waterproof plastic called polyethylene which makes them non-recyclable and a contaminant. On top of that, these cups release methane gas in landfill. So in short, a non-disposable cup is your best choice! Many meat trays are made of polystyrene which IS recyclable, but small pieces of the product tend to break off and get mixed in with other recyclables, causing contamination. As a result, most councils don't accept polystyrene in the kerbside bin.