I use Mold Armor on everything that gets moldy - awning, gaskets around cargo doors, propane tank cover. I spray it on and let it sit then rinse - no rolling the awning up, but suppose that doesn't hurt. Walmart, Lowes.
Experience without good judgment is worthless; good judgment without experience is still good judgment!
2018 RAM 3500 Big Horn CTD
2018 Grand Design Reflection 303RLS