Rio Windshield Washer Fluid Concentrated Features Scrubs away dirt, bugs and Heavy residue from glass for ultimate, streak-free screen It leaves your windshield crystal free and clear No harmful solvent and detergent Very safe for metal and rubber finish Directions for use Add bottle of rio windshield washer fluid (100ml concentrated) for every 3 liters of water. Keep the resulting solution into a closed vessel. Cautions: In case of eye irritation vessel Flush thoroughly with water.