Cleaning the awning on campers presents a unique challenge. They are often high and difficult to reach. The best method to clean awnings is to fully extend the awning or position it where it is best reached. Use a long handle brush when agitating the fabric. Spray a liberal amount of Bugs N All on the highest point of the awning. You can expect to get a bit wet. You may want to wear safety glasses to protect your eyes from grime.
Allow the solution to run down the top surface ensuring the entire surface is wet roll the awning up and let sit for 10 minutes. This will keep the solution and fabric wet while it is working to release the grime.
After 10 minutes of rest time, unroll the awning and begin scrubbing with a medium stiff bristle brush. After the entire upper and low portions of the awning have been agitated, rinse both sides with water.
Touch up where needed and allow the awning to dry before stowing it away.