Vacuum both sides of the rug thoroughly.
Shampoo the rug with cool water and the rug shampoo. Test a corner of the rug first for color fastness. Use the long-haired brush to brush the rug pile in long, linear strokes in the direction of the nap. Do not scrub vigorously and keep the nap wet with the water and shampoo solution.
Wash the fringes by combing them away from the rug with the same brush and shampoo solution.
Rinse thoroughly with cool running water. This is probably best done outside with a garden hose.
Use the window squeegee to scrape as much water as you can out of the rug nap. Move the squeegee in the direction of the nap.
Lay flat to dry. When the nap dries, flip the rug over and lay it out to dry the back. Vacuum the nap again to remove any stiffness from the drying procedure.