One of the worst culprits is paper inner sleeves or card where I find that the loose fibres can become entrenched in the grooves in which case it will take 2 or 3 runs through the cleaning machine, I always replace with anti-static inner sleeves even new vinyl.
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.