One question I have been asked many times over the years about cleaning carpets is " Will my carpet be the same after it's been cleaned. My answer is always " Well you can get it cleaned or just keep looking at it getting dirtier! " or " What do you do if your clothes get dirty ". Their are many fibres that are in carpets that are used in clothing so it's the same principle and no damage will be caused as long as you use a professional carpet cleaner. In fact I would argue that you will cause more harm by not having your carpet cleaned regularly as you will be amazed at what comes out of even the cleanest carpets we clean!