Bona professional 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. Bona professional Series Hardwood Floor Cleaner is a cleaner that will not leave any dulling residue, and is also environmentally responsible. This is a 1 gallon, ready-to-use refill, use it to refill the 32 ounce spray bottles or the 28-3/4-ounce spray mop cartridge.