I just finished cleaning mine with Tilex with clorox bleach in it.I am very satisfied with results. Spray it on. Wait 5 minutes and wipe it off. It went from ugly to white. All I used was a step ladder and a roll of paper towels. For whatever reason it is also sold as clorox with tilex in it. Available at doller general and Wal mart.
Patrick
There is also a product at home Depot called clam shell that is supposed to prevent mold. Have a bottle but haven't tried it yet.
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