When carpets may be at the very end of their life or are overly dirty the standard extraction method can extend the life of the carpet. The advantage to this method is it will restore crushed fibers and deeply soiled carpets. The draw back is stains can come back over time and dirt can be push down into the bottom of the carpet. Carpets stay damp longer and can cause bacteria and mold. The extraction cleaning process is a similar process as the low moisture carpet cleaner. Carpets will take more than a day to dry.