Six occasions when it is a good time to get your carpets cleaned It is not really until you have your carpets cleaned that you realise just how dirty they had become. The truth is, carpets become dirty over time – months and years of spills, stains and general traffic. in Public bookmarkswith upholstery_cleaning Note: It is not really until you have your carpets cleaned that you realise just how dirty they had become. The truth is, carpets become dirty over time – months and years of spills, stains and general traffic.