The answer to 'my window is filthy' is that there are several common causes for dirty windows, including dust, dirt, grime buildup, and water spots. Symptoms may include streaks, hazy or cloudy glass, and visible dirt or debris. The best solutions depend on the severity of the problem, but often start with a basic window cleaning routine.
For light, routine cleaning, homeowners can typically handle this as a DIY project. However, for more stubborn stains, hard water buildup, or extensive grime, it's best to call in a professional window cleaning service. They have the right tools, products, and expertise to safely and effectively clean windows without leaving any streaks or residue.