Glass Sauce was designed to spray directly on the sensitive electronic screens and your windshield to remove dirt, grease, oils, spots and germs while providing a clean, streak free appearance. Polymer bonds to surface to help resist scratching and continuously helps repel water and oil residues. Anti-Static. Safe for all surfaces. Ideal for all electronic screens and fish finder displays. KIT contains: a 4 oz.(118ml) bottle of Glass Sauce Treatment & Cleaner and one 14″ x 14″ terry cloth towel with enhanced microfibers. Just spray and wipe.