In This Article: How can you tell when your carpet needs professional cleaning? Why doesn't vacuuming remove all the dirt from carpet? What causes carpet stains to come back after cleaning? Can dirty carpets affect your home's indoor air quality? How often should carpets be professionally cleaned? How do pets impact the cleanliness of carpet? What causes lingering odors in carpet? Your carpet goes through a lot every day. From muddy boots and pet paws to spills, dust, and eve