Bona Pro Series Hardwood Floor Cleaner is a professional strength, non-toxic waterborne cleaner that is specially formulated for all types of hardwood floors coated with a clear unwaxed finish. It is a cleaner that won't leave any dulling residue, and is also environmentally responsible. This is a 4-ounce concentrate, mix one part cleaner to 8 parts water, or pour all 4-ounce in the 32-ounce spray bottle and fill the rest with water.