I have used Chem Dry of Four Seasons Nashua for many years. My carpets look brand new when he is done cleaning them. I have a long-haired dog and 3 sons. There was always 'stuff' being tracked in. Chem Dry always cleaned it up. Recently automobile grease had been stepped in and brought in on the house carpets. Chem Dry got it all up - you cannot even tell where it was. They even clean my sofas and make them look like new. I really appreciate their hard work. I strongly recommend them.