On my '89 Bronco, the fiberglass top gets mildewed if I don't keep it washed. Now, I used Comet (I know! I know! Yell at me later!) to scub it off. Comet has bleach and kills the mildew, but I *know* it can't be good for it. The water that washes off is always white. Now that could be the Comet or it could be white paint! (The Bronco is white with a white top.)
So, in the future what should I use to clean the milder, and scrub the top. AND what can I use to prevent mildew?