I knew taking the screens on and off when cleaning my windows was necessary, but it took so much longer I started skipping that step. Needless to say, I started to notice the difference in my windows. They just did not look as clean when I did not take off the window screens. I started hiring Adams team at Residential Burbank Window Cleaners, and I noticed a huge difference right away. Plus for the price it is a no brainer. I currently have them scheduled to come out every 3 months. Such a great decision.