Over the years, experience has taught me to stay clear of the green sandpaper, ultrasonic, gels or putty, I only now use a very fine sable hair artist brush to remove the fluffy stuff and careful use of a magic sponge to remove the more stubborn stuff, and no liquids.
HI-FI SYSTEM:-
Revox B250 Amp.
Revox PR 99 mk2 R2R.
Revox B126 C/D Player.
Yamaha GT2000 T/Table with Shure MKIV Cartridge and Jeco VN-45HE SAS/R Stylus.
Bang & Olufsen Beolab18's and the 19 Sub Speakers.
A/V 5.1 System :-
Soundsend Wisa box.
Harmen Kardon front and rear satellite.
Legend 10.2 Silverback Active Centre.