Window cleaning is a vital, but often forgotten, part of business maintenance. Dirty windows make a bad first impression; and no apartment complex, real estate agent, or commercial office wants clients to believe that the business does not keep their property clean. Since time is money, few business owners are able to clean their own windows. Instead, they hire professional window cleaning companies to keep their place of business perfect condition. Taking a window washing training course involves more than a quick run through of basic window washing.