Pro Glass Cleaner Effectively Cleans Glass And Mirrors With No Streaks Or Smudges. Professional-Grade, Powerful Concentrate Removes Fingerprints, Pollution, Smears, Dirt And Grime. Versatile Cleaner Also Works On Fiberglass, Plastic, Porcelain And Other Reflective Surfaces, Including Plain And Factory-Tinted Automotive Glass. It Does Not Contain Harmful Ammonia Or Bleach. Concentrated Cleaner Is A Cost-Effective Choice. One Bottle Makes Up To 31 Gallons Of Glass Cleaner.