Night time awning cleaning

Diamond Jim

New member
When cleaning very dirty awnings during the night even with lights it is hard to see your results until they are dry during the day. What are others approach to cleaning these things ? I've been dealing with a film of green mold many bird turds and very dusty. No complaints yet and some I'm pretty sure have never been cleaned. Been getting rid of the turds and green mold but some dried dirt residue appears when dried.