What methods do you use? 

We unroll and inspect every single piece of fabric that comes through our facility.  The inspection process is done to locate any heavily soiled areas that may need to be pre-treated to begin the cleaning process before it even reaches the machine.  If your ropes are still attached, they are gathered into a small roll and fastened with zip ties to prevent them from tangling during the wash cycle.  We then fold the section, set it into the machine and begin the wash cycle.  The tents are removed and checked to ensure a thorough cleaning, then they are hung in our spacious drying area until they are completely dry.  When dry, they are rolled according to your instructions.