Martin,
In the future you might try the cleaning product, "Awesome" which can be purchase at the dollar store or dollar tree, one or both I'm not sure. My wife swears by this stuff. Most recently I had the back of a Nikon N90 which had a rubberized coating that became very sticky to touch. I attempted to remove the coating rubbing with rag soaked in acetone with no success. Moving ahead several years I mentioned the situation to my bride who took the camera back and disappeared for 10 minutes only to return with the coating gone. She cleans everything with the stuff. The only restriction is, do not clean glass, it will etch glass. Will it work on Otter crap better than Simple Green we don't know but it might. There is that west coast air to considered.
Ray Shibe "Stinky Dog" 1984 C&C 41
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