The use of polyester by the carpet mills is he single worst thing the industry has done to turn consumers off of carpet and onto tile, stone, wood and laminate flooring. It used to be that a decent nylon carpet would last 20-40 years and still clean up well, just be out of style. Now all of these polyesters and polyester blends are lucky to go a year before breaking down in the traffic areas.
Thanks, Carpet Mills, for caving to mega and franchise retailer's demand for ever cheaper product, using inferior polyester, and then blaming our equipment/chems/techniques for your crappy, dulling, matting carpet problems..