Product Guide Site Furnishings The PrairieFence wheat-straw/plastic composite privacy fencing system provides a durable alternative to vinyl and wood-plastic composites. Photo: Heartland BioComposites Behind the recommendations Related articles Behind the recommendations Related articles Site Furnishings All approved products contain some post-consumer recycled content, with several boasting 90%–100% overall recycled material. More about Site Furnishings Recycled Plastic Marine Pilings CCA-Treated Wood Under Fire Agrifiber-Plastic Composite Privacy Fencing Introduced Scorecard Shows Some Plastics Are “Cleaner” Than Others Plastics are made from petrochemicals whose environmental profiles are complicated at best. But some stand out as, if not cleaner, at least less dirty.