Polycarbonate is not used as a one-way packaging material. In fact, polycarbonate products are largely reused and recycled. For example, large 5 gallon water containers are made from polycarbonate. These water bottles are typically refilled up to 40 times before being mechanically recycled. Polycarbonate is therefore not a material that would, under normal use and applying responsible waste recovery schemes, end up as debris in the sea. In fact, the efficient nature of polycarbonate in many cases helps preserve our resources. Polycarbonate is the material used to make CDs and DVDs, two products that have revolutionaised data storage and enabled enormous improvements in resource efficiency as a result.