The answer to 'how often to clean carpet' is that most experts recommend professional carpet cleaning every 12-18 months for the average household. This helps remove deep-down dirt, dust, and allergens that regular vacuuming can't reach. However, the exact frequency may vary depending on factors like the number of people and pets in your home, whether you have children, and how much foot traffic your carpets see.
Regular vacuuming (at least once a week) is also essential to maintain your carpets between professional cleanings. This helps prevent dirt and debris from getting ground into the fibers. You may also want to consider spot cleaning spills and high-traffic areas more frequently to keep your carpets looking their best.