I used this when my child had asthma, during visits to my parents' house. I think this is a welcome product for children with asthma, especially heading into winter. There are some minor scratches on the surface. Operation has been confirmed. The power button needs to be held down to turn it on. Please check the other conditions in the photos. There are only two parts to wash, so it's easy to clean. When you think of a futon cleaner, you think of Raycop. Everything in the photos is included.