For the cleaning I used a cotton swab dipped in water. This was so I could clean each tiny crevice. I simply rubbed every inch of the detailed part of the frame to clean it. The bottom was the worst and you could tell there was cigarette smoke mixed in with the dust. It did all come off. The only issue I had was some of the plaster broke off as I was cleaning it. I tried to keep all the pieces in the same place they fell off from. Some of them would line up easily so i was able to place them back later without much hassle.