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Just buy a can of expanding foam cleaner - it’s a revelation for getting it off you.
You’ll need a can of it if you buy a dedicated gun anyway.
https://www.screwfix.com/p/no-nonsense-foam-gun-cleaner-500ml/60133?
Pro-tip: wear two pairs of latex gloves to do this.
Unlike filling in a hole, you'll probably end up trying to mush the wire wool in a bit and inevitably end up with it on your hands. It's such sticky stuff that you'll end up coming into contact with some of it once you've taken the first set of gloves off.
For this sort of job you're probably best getting a dedicated gun + cleaner.