Onzow-Zerodust as well as a carbon fiber brush, tried the Mr. Clean Magic Eraser thing but just did not work as welll as the Zerodust. When I first got into vinyl in the 80's I bought a Linn Sondek LP12, back then Linns advice was to use ultra-fine grit jewelers sandpaper. It worked well but I imagine it shortened the life of the stylus considerably. Still have some around the house somewhere.
Cheers,
Shawn