Sonax Glass Cleaner Concentrate – 10 liter. Eradicates exhaust film, nicotine film, insects, and dirt from windshields and windows. This phosphate-free formula leaves a streak-free shine for optimum visibility. Use SONAX Glass Cleaner on household glass, too. Spray onto windscreens and mirrors with the pump sprayer, allow to work in briefly, then wipe off with paper towels or Car Care Cloth.