blue degreaser/cleaner. It’s in the area with the high pressure washers. It’s safe to use, has no bad smell, and is even reuseable! I use it to clean the garage floor and car engines, but if you put some in a bucket or plastic container and drop in the hinges they will come out the next day with the paint just falling off. Oil based paints might take another day to come off, but it will. It is also, as far as I know, harmless to copper, brass, or aluminum.
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