How often, and how, do you clean your stylus?

I do similar as @snilf only with the Japanese Onzow device on a little purpose-built riser. Volume on, to listen for contact.

Seconding @mijostyn ‘s concern for blue tack. There’s also a greasy component to that stuff (why you should also never use blue tack on paper / posters you plan to re-use or keep in clean shape) and I’m not sure whether that would affect the stylus (whether for better or worse).