While most stubborn stains can be removed by professionals with the right mix of chemicals, the proper equipment, Red Stains including wine, juices, cool-aid and other dye laden products tend to cause permanent and unwanted stains. "They will not remove with the normal cleaning process." HTC is one of the few companies that specialize in red stain removal. After the initial inspection of your carpets HTC technicians will inform you and give you the option of removing those red stains that weren't previously able to be removed. If you have beautiful carpets but have unsightly red stains that remain. Please ask your HTC technician for upgrade options to expertly remove those tough RED stains.