The use of a Jewellers Putty has been reported to me via a friend as being a very good method for cleaning Styli.
My friend is impressed to the point this is their only method used, other methods are no longer considered.
I was informed that Jewellers Putty is the same as other Styli Cleaning Putty available via HiFi Outlets, but the J' Putty will be cheaper to acquire.
If concerned about the cleaning method for a Styli, the Putty is worth a investigation.