We were very tired of hand washing windows for hours and decided to find a more acceptable solution, then one of our cleaning sector employees suggested using a steam cleaner. In an article from window cleaner suppliers I found information https://www.fortador-usa.com/blog/best-professional-window-cleaning-tools-window-cleaner-suppliers that helped us. After all, steam power can quickly cope with even the toughest dirt and grime, making your windows look like new in no time. Additionally, the steam cleaner can be used on the most diverse surfaces, making it a universal addition to your cleaning arsenal. The article also has a lot of useful information on cleaning sets and more standard tools- I recommend.