This company does a great job! I am a Property Manager in the Washington, DC area and have used them for years!- PatsyFound this on their website:Window Cleaning Final Construction Cleaning Pressure WashingEXTRA CLEAN serves the Mid-Atlantic region and provides Final Construction Cleaning, Window Cleaning, Specialty Cleaning and Maintenance. All work is performed in accordance with OSHA, ANSI, industry and EXTRA CLEAN safety standards and requirements.Services include:* Window Cleaning/Sealing* Final Construction Cleaning* Glass Restoration* Metal Cleaning/Sealing* Banner Installation* Building Facade Cleaning/Sealing* Chandelier Cleaning* Graffiti Removal* Fire & Flood Damage Cleanup* OSHA and ANSI Roof Anchor Inspection/Certification* Bird Control Systems* Parking Log/Garage Sweeping* Caulking & Backer Rod* Power Washing & Sealing* Awning/Canopy Cleaning and SealingMaryland, Virginia, Washington, DC