Knock Out mould and mildew cleaner, ready to use multicide fungicidal wash surface biocide for the control of organic growths, industrial strength multicide. Fungicidal wash, for use externally and internally to eliminate mould, mildew, algae and fungi from plaster, masonry, timber, tile, plastic and similar substrates. Removes the blackening effect of mould that can occur on wooden surfaces, often as a result of water penetration. Low odour, this fungicidal wash is an ideal preparing agent, readying your surfaces for use with other finishing products. Directions for use; Coverage 5 - 10 square metres per 1 litre. Remove any loose matter and visible growth with a stiff brush. Apply the Mould Cleaner with a brush, roller or spray. Scrub the treated area and leave to dry for 20 minutes (24 hours when used as a cleaner). Wash away any excess with water and allow to dry, repeat if necessary.