Upholstered furniture becomes dusty and dirty over time even if you hardly use it. When the upholstery is clean, you will just feel it. This is one of the reasons why people hire a leather upholstery cleaning service since this is normally a job for professionals. This is part of regular maintenance, and a leather sofa is not always cheap so you should keep it looking beautiful. Aside from that, there are a lot of other factors why you should have it cleaned.