Streak Free Concentrated Glass Cleaner Streak Free is a concentrated glass cleaner for use on all glossy or reflective surfaces including windows, mirrors, stainless steel, chrome, laminates, plastic and vinyl. One gallon of Streak Free concentrate will produce 64 gallons of ready-to-use glass cleaner. Formulated to break down greasy oils or other difficult soils with minimal effort. Streak Free is fast drying which improves appearance, eliminates streaking and reduces the labor of polishing.