For a time the problem can be held in check by mopping up the leaching with powders. Corn starch, talc. It looks bad but can help prevent damaging clothing or cross contamination. Once it gets bad enough then I attempt to strip the coating but I agree with others here, no solvent seems appropriate. I wonder if that cleaner intended to remove the waterproofing goo from fibre optic cables might work. That goo is equally nasty.
