I was given a sample pack years ago - they were very impressive at cleaning all sorts of crap off my hands.Ordered4p a wipe
I'm worth it.
So I bought a big tub . . . I still have a lot of the big tub as they seemed much less effective. I can't get a good enough grip on them to do much. Aldi flogged some a few years ago that seemed to be coated with grit on one side - you could get some traction with those.