Steam Cleaning - This kind of is often called hot water extraction. If the stain or dirt is really so deep seated in it you might have to use a mixture of water, vinegar and proper rug cleansers to eliminate it from the rug. http://vintagesewing.Blogtspot.com/__media__/js/netsoltrademark.php?d=Diywiki.org%2Findex.php%2FBeyond_Cleaning_-_Your_Need_For_Carpet_Repair