It depends on how dirty your windows are and how often you want them cleaned. If they’re just a little bit dirty, you can probably clean them yourself with some soap and water. But if they’re really dirty, you may need to hire a professional window cleaner. Professional window cleaners use special equipment and products that can get your windows clean without streaks or spots. They also have the experience and know-how to clean all types of windows, including those that are hard to reach. So if you’re looking for the best possible results, it’s usually worth hiring a professional window cleaner. This answer was provided Malibu Window Cleaning in Annapolis, MD!