I have found that the best way to clean stubborn stains is by using a product called Bar Keepers Friend. You can use it on pretty much anything. It will not scratch metal, fiberglass, glass or plastic. It is the best thing I have found to remove mildew and rust stains from fishing gear or marine hardware. You can get it at ACE Hardware, Lowes, or Home Depot. For really hard to remove stains just use a soft bristle brush and you will be amazed how well it works!
Submitted By: Richie