Some area rugs are relatively large. This makes the process of cleaning the rug in a washing machine prohibitive. It can also make the cost of transporting a rug and dry cleaning it cost prohibitive. Power washers, commonly used for cleaning cars or home siding, can make a useful tool for cleaning large area rugs. A power washer uses pressurized water to clean surfaces. The pressurized water will easily work dirt out of the rug's fibers.
Power wash the surface on which you will place your rug to ensure the surface is clean. A suitable surface for cleaning a rug is a wooden deck, asphalt driveway or concrete sidewalk. Do not attempt to power wash your rug inside the home as the water from the power washer will get everywhere.
Place the rug onto the surface and lay it out as you would if it were in your home.
Place the power washer onto its lowest setting. Even at its lowest setting, it will have enough power to remove dirt from the rug.
Press the trigger on the wand and hold the tip of the wand 10-to-12-inches away from the surface of the rug. Move the washer from left to right going across its shortest dimension. This will push the dirt out of the rug.
Overlap each additional row by 50 percent as you work your way down the rug.
Repeat the process until the water expelling from the rug remains clean.
Place a small amount of carpet cleaner onto the nylon bristles of a brush. Scrub the surface of the rug with the nylon bristle brush.
Repeat the power wash cycle until the water coming off the rug no longer has soap in it.
Place the rug on a clothesline until it dries.