Removes dirt, grease and residue on glass and prevents spots that can be left after drying. Skin-friendly and non-toxic. One premeasured tablet mixes easily with water to make 2.5 gallons of window cleaner. Doesn't leave a film. Application: Window Cleaning; Applicable Material: Glass Dirt Types: Hard-Water Stains, Lime Scale, Mineral Deposits, Rust, Soap Scum; Scent: Unscented.