Although regular vacuuming can remove dry soil and debris from your carpet, it leaves behind oily soils and particles that are produced from cooking vapors,pets, and dirt tracked in from outside the house. These oily contaminants that are left behind can cause your carpet to dull and fade. As the contaminants build up they become more difficult to remove. Regular deep cleaning of the carpet can prevent the excessive build up of contaminants and keep your carpets looking fresh and clean.