A squeegee is a professional window cleaner's most important tool. It is used to remove water and other contaminants from the surface of windows, leaving them free of streaks and residue.There are different types of squeegees available on the market, but pro window cleaners prefer to use ones with a soft rubber blade. This type of blade is less likely to scratch the surface of windows than one made from another material. In addition to a squeegee, pro window cleaners may also use a brush or cloth to remove debris before they begin cleaning with the squeegee. Types of Window Washing Soap The vast majority of professional window cleaners use a simple mixture of water and dish soap to clean windows. This solution is effective at removing dirt, dust, and other debris from glass surfaces. In some cases, window cleaners may also use vinegar or commercial window cleaning solutions to achieve a streak-free finish. No matter what cleaning products are used, the key to getting sparkling clean windows is to first wash them with a soapy solution and then rinse them thoroughly with plain water.Note: This content above was provided to us from our good friends at Professional Window Cleaning in Scottsdale, AZ.