Oxy-Dry generational carpet cleaning with ULM/SETT

I have been cleaning the carpets for this family for over 15 years starting with the mother and now I clean the carpets for her daughter. The first time I cleaned these two rooms was about 5 yers ago and they were terribly stained and challenging to clean. Five years ago I restored these carpets and every year I am back cleaning them again and although they are often badly stained I am able to remove the soil and stains with the rotary machine and the Ultra Low Moisture/Soil Extraction Transfer Technology method.