We always Highly Recommend using Scotchgard on your Carpets, this Helps to Keep the Materials Safe from any Dirt or Spillages etc. It also Helps to Stop the Colour of the carpet from Fading. The Scotch Guard will stay in the Carpets fibres until you next have your Carpets Cleaned, so it is Recommended you have this Treatment after Every Clean. It can also be used on any Upholstery you Require to be Cleaned. It simply helps maintain your carpets in between cleans protecting it at all times.