Razorblade: scrape it off, like you are going underneath. It will come off, but do not use corners or you could scratch. I used this when I used to clean apartments.
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We are moving and the bathroom of the new place has just been painted and tiled, the old porcelain bath has been left with paint and grout splattered all over it. It makes it look dirty.
Several years ago after painting a room in my house, I used the fiberglass bathtub in my guest bath to wash everything out. We won't get into how completely dumb that was, believe me I learned my lesson.
But anyway, since then I have used turpentine and everything else I could think of to get the paint off the bottom of the tub where it's got the non-skid pattern. Can anyone tell me how I can get it up?