[Salt Life]

What is the most effective product to get rid of the little black spots which I assume is mildew? Also, what is the process I should use to remove those spots. Type of brush etc.......

I cleaned it about a month ago using rv cleaner which appears to have a littlle bleach in it and a soft brush on a extending, retracting pole. Basically, what I use on the walls.

I'm assuming a stiffer brush would work better, what else?

Thanks.. .