If you go the carpet cleaner way, go to a professional janitorail supply company and ask for a cleaner with encapsulation technology. A little goes a long way and is amazing at removing daily grime. A store that sells Kirby Vacuum Cleaner parts will also have such a product, if you can't find elsewhere. I've got a spray bottle of the stuff from the company that does my carpets. It's amazing stuff.HECK, I just want to know the best advice to clean mine! I have red coth on the incerts and have noticed they have black smudges. I am considering a carpet cleaner...but just worried it may be too caustic.