First, pre-treat the carpet with BISSELL Tough Stain Precleaner. Then, clean the carpet with hot water and your BISSELL Carpet Cleaning Machine with the SmartMix dial set to the high traffic. Make sure that three or four wet passes are taken for each section cleansed. The wet passes should be followed by at least two dry passes. When cleaning is complete, a recommendation would be to use a fan to expedite drying.