specifically I was referring to small twigs and leaves and seed pods being rolled up into the awning, without a ladder, short of parking next to a picnic table, there's not an easy way to brush it off. Our fabric appears to be something like sunbrella, but black, both top and bottom. I hadn't considered only putting it out halfway or less, I can try that. I'll keep trying the awning, but as it is today, I'm seriously considering taking it off and storing it.
Previously, on an earlier class A, we had a Zip-Dee awning that was awesome. it had two points of attachment at each end, and could be sloped a lot to shed rain. The Zip-Dee rolled up in a reverse manner, which meant that stuff naturally just fell off as it was rolling.
Thanks for the hints.