Naccosan will effectively inhibit the growth of mold and mildew and the odors caused by them when applied to hard non-porous surfaces (indicated in instructions). Add 0.5 oz. of Naccosan per gallon of water. Apply with a cloth, sponge, mop or chemical spray device so as to thoroughly wet the surfaces. Allow to dry on surface and repeat when mildew growth returns. Cross contamination is of major housekeeping concerns in instructions and industrial areas such as greenhouses, and flower shops. Naccosan has been formulated to aid in the reduction of cross contamination in these areas.