To obtain the best results from using a Rug Doctor it is important to pay heed to the basic essential elements of a sound carpet cleaning strategy. One of the most important of these elements takes place before any other part can be successfully implemented, and that essential element is pre-vacuuming.
Regular vacuuming is already a widely accepted practice to remove periodic accumulation of debris and most every homeowner already recognizes the importance of doing this chore rather frequently, but pre-vacuuming is rather more involved.
(Dyson's DC25...an example of a good quality vacuum with high performance)