My canopy cover is 5 years old. I like it it's heavy duty and still intact. Served me very well. Now I am parked under the elements and I've noticed recently after rain next morning my clean windshield is not clean anymore. There is dirt embedded in the cover and when wet it soils the plexi. Not a disaster plexiglass cleans easily but I would like to clean cover as well. Any recommendations? Can I simply put it into a washing machine? Dryer?