Any polyethylene bag and overwrap accepted by retailers from their customers or polyethylene stretch wrap or other film generated back of house may be included. Bags may be mixed color or printed and primarily High-Density Polyethylene (HDPE, #2) but are expected to include other polyethylene bags and LDPE/LLDPE overwrap. Films may be coded with ASTM D6711 resin identification code "#2, HDPE" and "#4, LDPE." All bag bundles should be free of free-flowing liquids.