The answer to 'best way to clean window' is to use a combination of a squeegee, microfiber cloth, and window cleaning solution. First, wipe down the window with a microfiber cloth to remove any loose dirt or dust. Then, spray a window cleaning solution onto the glass and use a squeegee to wipe it clean, working from top to bottom. Be sure to wipe the squeegee blade clean after each pass to avoid leaving streaks. Finally, use a dry microfiber cloth to buff the window and remove any remaining solution.
Proper window cleaning technique is important to achieve a streak-free, sparkling finish. It's also important to clean windows on a cloudy day or in the shade to avoid the solution drying too quickly and leaving marks. With the right tools and technique, you can get your windows looking their best.