Ventilate the room well prior to use. Vacuum the carpet before use. Shake the Vanish container vigorously before each use to maximise product coverage. Remove cap & treat an area of 0.6 x 1.5m squared at a time, sprinkle evenly on the carpet following the guidelines on the bottle. Do not add water. Using a soft bristle brush, immediately brush the powder thoroughly into the carpet. Continue to the next section. Wait at least 20 minutes for the powder to dry. Meanwhile replace cap tightly & fit a new vacuum bag or empty the machine. Now vacuum the whole carpet thoroughly. Occasionally you may find light patches after cleaning. The powder can bind to stain residues; you can remove the residues with a soft brush and vacuum again.