My cover is sunbrella and has some mold on the inside. I tried using their instructions with a mild bleach and water and just scrub & rinse....not too great. I was thinking the washing machine on gentle like I do with my car's floormats. Spray the cover down with some stuff, stick in the washer for 20 mins and it should be mint. Any thoughts? What kind of "stuff" did you use to clean it with? My floormats I mixed Oxyclean, Simple green and a tad of shout.