The amount of time between carpet cleanings depends on a variety of factors, including the type of carpet, the amount of traffic it receives, and whether or not pets are allowed on it. However, most experts recommend cleaning carpets at least once every six months.
Carpets should be vacuumed regularly to remove dirt and debris, which can help to extend the time between full cleanings. In addition, using a carpet cleaner service occasionally can help to remove tougher stains and spots.