I wanted to say--after many many dirty damp paper towels that weren't getting any less dirty, I finally hauled the ladder to the bathtub for a scrubbing. I used Murphy's Oil soap and a stiff nailbrush and got that sucker really clean now. I think it was the finish coming off because it looks much lighter now. Boy was the bathtub dirty!! After it was half way dry I put it back in place in the sewing room and hopefully it'll be dry enough today to use. Our wood heat ought to dry it thoroughly.