Glass Cleaner And Protector Concentrate, 2 L Bottle, 4/carton Works like a heavy-duty glass cleaner without the adverse effects of solvents. Non-ammoniated, streak-free formula. Scotchgard™ Protection leaves an invisible layer of protection on glass surfaces to better preserve a clean shine, reduce fogging and make future cleaning easier. Concentrate-to-water-dilution ratio: 1:82. Faster drying times than most alternatives.