FWIW, I have used Last stylus cleaner before and after playing nearly every side of every record I have played in the last 30+ years. As I mentioned previously I make a point of minimizing how far up onto the cantilever it is applied, to minimize the possibility of any of the liquid migrating onto the internal suspension.
I also use a
Nitty Gritty 2.5FiMk2 Record Cleaning Machine
on the majority of the recordings I play, but not nearly on all of them. I use a Zerostat before playing every side of every record. Also, my SOTA turntable has a dustcover, so between that and a very occasional dusting of the platter with a carbon-fiber record brush (that I don't use on records) the platter is kept clean.
I do not use any brushes on the stylus other than the very soft one that comes with Last cleaner.
I have never had any problems as a result, with any of the cartridges I have used during those 30+ years. Those cartridges include various incarnations of the Grace F-9E (the original non-Ruby version; multiple original Ruby versions; a Soundsmith re-tipped "contact line" Ruby version), a Grado Reference Sonata, and the Audio Technica AT-ART9 LOMC I currently use.
Regards,
-- Al
