A canvas awning can be cleaned using a mild or natural soap like Woolite or Dawn. Tough stains on a canvas awning can be cleaned using an equal measure of chlorine bleach and a mild soap.
Small awnings can be removed from the frame and machine washed with a mild soap. Large awnings must be washed by using a stiff brush to loosen and remove any debris. The awning then needs to be hosed down. A mild soap is used with a soft-bristle brush to remove any stains and to work the soap into the canvas. The awning is then rinsed and allowed to air dry.