During pre-inspection we always ask if there are any spots or stains on your item(s), especially animal urine or mold/mildew.  This helps us determine if we need to proceed with odor mitigation or whether we do a routine washing on the rug.  If the rug does need odor mitigation, we give price quotes so you know exactly how much it costs. We soak the rugs in a pre-treating tank, eliminating bacteria and odors. We then wash the rug as usual and flush everything out leaving no residue.