Cleaning roof and exterior of the RPod

I made the mistake of not covering my RPod over the winter and spring. It is dirty but not just dust or tree pollen. It is mold/mildew I guess. Dark gray color. What can I clean it with? Soapy water gets the dirt but not the crap. I am afraid to use a mildew type bathroom cleaner. I did try a spray I use to clean vinyl siding and it help a little. Any products I can buy?

Mix ratios?

BTW - Borax is like 5 bucks at Lowes for 60 some ounces and cleaning vinegar is less than 2 bucks for 60 some ounces. Several applications.

Wonder if a cup of clorox in a bucket of water would work? Probably have to toss your clothing afterwards, and watch your wind drift.  A ladder and a long handle brush, and rinse with a gentle stream rather than a spray.

SH I would say it cleans mildew as it parked outside mildew is hard to prevent without a stronger chemical and I'm not convinced that is way to go.

I use vinegar instead of bleach, works just as well, slightly acidic, it's cheap compared to bleach, there is uses for bleach but I do not apply it to my vehicles.