I have seen and used several awning cleaner's over the past couple years, and have not had very good luck with any of them, until now.
This new mixture works and works very good. It's one cup of water, 1/2 cup of bleach, and 1/2 cup of vinger ( To get enough you will have to expand on the ratio above). I then rolled the awning up for about 4 hours, when I unrollled the awning it was clean (no ordor, no mildew) I then rinsed the awing off top and bottom and let it air dry. Used a small garden type spayer to apply the mixture.
Life is something to do when you've finished breakfast
Chuck & Margie
08 2500HD Silverado 6.6L Duramax