I use Simple Green, spray top/bottom as best you can (I use a 1 gallon pump sprayer) roll up awning for 30+/- minutes then scrub with medium bristle brush, rinse thoroughly & leave out til it is completely dry. I use a pressure washer on mine without any ill effects, just fan out the spray.
Danny & Linda
Sold our '13 Thor Redwood 36 FB
Currently RV & truckless