SoftWashing sidewalks is the best method for cleaning sidewalks. No damaging pressure is involved in fact the psi never surpasses 100. Chemicals are far more important than pressure when it comes to cleaning a surface. We use a special blend or water, bleach, and soaps to penetrate and kill any organic growth on exterior surfaces. For more information and to get a free quote 24/7 please visit us at https://www.xcellentxteriors.com