I tried the ISSO mold and mildew remover, and it did not work, maybe faded a little, Used the KGB Swag to keep a mold protectant on the kite, due to the fact I kite the most in fresh water.
Hey thomascarl, what medicines worked, I would be intrested to know. I still want the stains removed but I want to keep the waterproofing on the kite.