Even the highest-qualityitems can show soiling over time. Protect your investment by calling your local SERVPRO franchise professionalto clean and maintain your carpet and upholstery. Professional cleaning can address moderate and heavy soil conditions in your carpets. How often you'll need professional cleaning depends on soil build-up, traffic, type and color of carpeting. A good rule of thumb would be to professionally clean your carpet every 12 months. The best advice is to clean carpets before they become totally saturated with soil.