The extent of pre-sorting needed depends completely on the local recycler company and how modern their systems are.<p>Where I lived recently, there were no specific guidelines about coloured glass, labels or cardboard dimensions.<p>In NYC, it&#x27;s even simpler — only two bins: (1) glass, plastic, metal and cartons (mostly juice containers), and (2) paper and cardboard. By metal, they mean almost anything made of metal, including spray cans and filing cabinets (!).