I'd put something more along the lines of
When choosing a carpet cleaner you are trusting them with your most valuable asset, your home! Avoid uninsured, untrained carpet cowboys and call the professionals today!
Or
we won't clean your driveway, we won't clean your car, we won't clean your oven, we won't mow your lawn, or paint your fences and we certainly won't do the washing up! But we will professionally clean your carpets. Jack of no trades, master of one. Contact the professional for fresh clean healthy carpets today!
or
You woulnt just vaccum your bed clothes and expect them to be clean! Your carpets are no different. Call the professionals and breath new life into your carpets today!
Just a few different ideas for you as plenty of people will get a joe bloggs in to service their boiler if he is corgi .the key is to put the doubt in their minds about using a cheap & cheerful alternative to a proffessional service I think.
Mark