If you have the Enzyme Concentrate, make sure to properly dilute it before using. Spray the diluted enzyme unto affected areas so that they are well soaked. Let the enzyme sit for up to half an hour, and then wipe away. If you have a larger area, mist the enzyme over the entire carpet and leave it. The enzyme will naturally break down the dirt and soil stuck inside your carpet fibres. When the carpet is dried, vacuum the area and you would notice a fresher looking carpet!