For best cleaning results you may want to consider hiring a professional carpet cleaner that has the proper cleaning agents and tools to properly remove the stains.
Cleaning filtration lines from carpet best cleaner.
A vacuum may remove some of the discoloration but the smallest particles are electrostatically bound to the carpet fibers.
Kleenrite blackout filtration soil remover removes black filtration lines from carpet edges under doors and around heating and air conditioning vents.
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To prevent future filtration lines from even appearing it is best to seal the space between the wall and floor using tape.
Moppins frequently recommends using shaving cream the white foamy kind for removing difficult carpet stains.
However some have had success with liquid dish soap mixed with water.
A solution of equal parts of water and hydrogen peroxide is also an effective cleaner.
Agitate the pile of carpet with a hard bristle brush or a pull scraper.
If the spots are still there then you ll have to resort to some detergent.
Massage the foam into the stain and let set.
Filtration lines are ugly and are a pain to deal with.
In order to improve existing filtration lines you will need harsh cleaners and a stiff brush to work at it by hand.
Carpet cleaning professionals report a 25 success rate removing all of filtration soil stains.
They are most commonly associated with the furnace of the home.
Others may use a steam cleaning machine to help extract the pollutants out of the carpet.
This is an excerpt from a larger job demonstrating filtration line removal.
Mix a solution by adding a cup of white vinegar to a gallon of warm water.
Once you place tape over this gap air can t pass through.
Test your solution on an inconspicuous part of the carpet to make sure it won t affect the color or damage the baseboards.
Work the cleaning solution into the carpet with a scrub brush.
The key to cleaning these lines is to agitate the fibers by scrubbing or scraping to loosen the dirt particles.
This makes it possible to clean them with water and an appropriate cleaning solution.
It suspends back carbon and other pollutants for easy thorough extraction.
Dip a clean white rag in warm water and vigorously scrub the black marks on the carpet.
Place the crevice tool on your vacuum cleaner hose and run it along the affected area.