What type of carpet should I purchase if I want to be environmentally friendly?

N6 Nylon, PET Polyester and DuPont Sorona would be great selections. N6 Nylon products are 100% recyclable and can be recycled into carpet over and over again. PET Polyester is another product that is made by weaving recycled plastic into the carpet fibers. DuPont Sorona has an ingredient in its polymer made from corn, which is a renewable resource.