GG-3 is ideal for cleaning windows with a squeegee. It's super concentrated, use only 1/10th on an ounce per gallon of water. Windows look cleaner, no bleed-back, great slip, doesn't streak and produces excellent results. Also great for adding to the windshield washer tank on vehicles. Won't harm window tint film and can be used to float it into place. Stays wet on hot or windy days; no streaking. A professional product that's economical too. One gallon makes 1,280 gallons of window cleaning solution.