Mix equal parts white vinegar and water in a bucket (you can also make it in a spray bottle). Optional: add a few drops of dish soap to help cut through grease and grime. Use a dry microfiber cloth to remove dust or dirt from the window surfaces.

Professional window cleaners typically use either a white vinegar solution or a commercial hard water stain remover to clean hard water stains on windows. A common vinegar solution for this purpose consists of one cup of white vinegar mixed with a gallon of distilled or bottled water.

Dish soap is a cost-effective choice for outdoor window cleaning because it's gentle on glass and can effectively cut through dirt and grime. If you prefer a natural solution, use a mixture of equal parts white vinegar and water.

DIY Window Cleaner with Rubbing Alcohol To make this homemade window cleaner, first add 1/4 cup rubbing alcohol and 2-3 Tbsp. distilled white vinegar to a spray bottle. For best results, make sure your vinegar says "made from grain" on the label. Then add 1 cup distilled water.