Lon Trice suggested to use a light amount of acetone if things start to slip, which is rare. He suggested only alcohol if it is 99%. Not to use the 70% wipes unless it was the only thing you could get. After a few years of heavy running he said to just take a green scotch brite, lightly, if the previous doesn't work & it starts slipping.
My understanding is the only reason to ever take a stone to it is because you intentionally want two sounds from the call. Meaning you would also have two different striker areas. One untouched & scuffed.
I'm personally just sticking with one untouched striker area. I'm not entering any call competitions, just trying to eat turkeys. I feel like taking a stone to it is counter intuitive for what it is intended to sound like. Same goes for stoned & anodized aluminum.