Removing filtration soiling is a time consuming process and is sometime not possible to completely remove all of the soiling due to the fact that it often penetrates deep into the backing. When you have your carpets cleaned the technician will generally pre-treat spots and spills and can also pre-treat the lines along baseboards. Depending on the type of pre-treatment used you can usually expect some moderate improvement, however to make a significant impact special treatment is often required; followed by manually scrubbing the soiled edges with an agitation device such as a brush. The final step requires heavy flushing of the treated lines so that residue is not left behind. Because of the considerable time involved in treating, agitating and flushing, removing dark edges can sometimes cost a bit more than you may be willing to spend. So, the cost factor as well as the reality that complete removal of filtration is not always possible must be weighed. In the Puyallup area please call for inspection and estimates.