PROFESSIONAL PRESSURE WASHING SERVICES We have been providing Harford County, Baltimore County, Cecil County, Howard County, Carroll County, Anne Arundel County Maryland, Wilmington DE, New Castle County Delaware, Delaware County PA, and Chester County Pennsylvania with affordable pressure washing services for several years. We are one of Maryland’s # 1 exterior cleaning companies. We use cutting edge methods to power wash the exterior surface of your home or commercial property. At Maryland Pro Wash we use safe low pressure techniques, combine with some of the best bio-degradable cleaning compounds the industry has to offer.