Filtration soiling on carpets is due to dust and dirt blowing in the air through doorways and vents. The dirt will stick to porous surfaces such as carpets and baseboards until a noticeable build up has accrued. Certain measures can be taken to prevent carpet filtration soiling around the home. Place mats between interior doorways, regularly dust around air conditioning vents and remove items such as bins away from outdoor air ducts. Care must be taken when cleaning interior filtration soiling to prevent stains on the carpets.
Vacuum as much loose filtration soil as possible. Use the vacuum crevice attachments to remove the soiling at the edge of the carpet next to the baseboard.
Pour some dry cleaning solvent into a clean, empty spray bottle. Dry cleaning solvent will lift the dirt from the carpet pile.
Spray a light mist of dry cleaning solution over the soiled carpet areas. Do not over soak the carpet.
Brush the soiled carpet area with a soft-bristled brush to lift the dirt from the pile. Gently brush the pile so it is slightly raised.
Blot the soiled area with an absorbent cloth or terry towel.
Vacuum the soiled area again.
Repeat the process until the soiling is removed.
The operation may take some time to complete. Ventilate the room when using dry cleaning solvent.
Always blot the filtration soiled areas with the absorbent cloth. Rubbing will spread the stain and make it more difficult to remove.