1) Spray NOMO Professional directly over the area affected by mold. Since the mold may already have spread invisibly, also spray the surrounding area (approx. 20-30cm).   2) Leave NOMO Professional to act for about 15-20 minutes so that the mold becomes inactive.   3) Then clean the infested area with water and a sponge, brush and/or pressure washer. In some cases, the mold will leave stains or residue. If a bleach or other product is used for removal, rinse very thoroughly to ensure no residue remains. Allow the surface to dry completely before proceeding to step 4.   4) Reapply NOMO Professional to create an anti-mold barrier. Spray NOMO Professional on as a fine mist. Avoid dripping! Allow the product to completely.