Recently, I have been cleaning some fabulous carpet, such as wool and see dark lines all around the edges of the carpet and under the doors.
What is this you ask? This is called filtration soil. It occurs when the heating filters of the home have not been changed on a regular basis. A dark oily soot is left around the edges of the carpet and under the doors.
Filtration is actually hard to remove and sometimes takes color with it when treated. We are a Portland carpet cleaning company with specialized skills at removing tough filtration stains.
One easy step to improving your indoor air quality and saving your fabulous carpet is to simply change the heating filters.
Until next time....Sean
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