The GPM of effective commercial pressure washers range from 2.2 to 10 ... Ideal for light to medium duty projects, the Greenworks 2000 PSI pressure washer comes with an 11-inch rotating surface ...
While pressure ... washer is to use a mixture of soapy water and a stiff brush or broom. You can also use a white vinegar and water solution, or you can purchase and use a commercial cleaning product.