Moonwatcher, to your post of 2/13, please re-read my post about “ultrasonic “ STYLUS cleaners. They are not ultrasonic. They operate at around 500 Hz. Of course, US cleaners for LPs are ultrasonic. That’s all I was saying.
@lewm Though just to be confusing, what you say is perfectly true for the Hudson, Flux and similar devices (all seem to be the same mechanism in various plastic shells), there is one actual U/S stylus cleaner on the market, and it is made by Humminguru! The S-Duo. I have one but hardly dare use it for fear of getting water inside a cartridge. One has to lower the tip of the cantilever into the shallow bath of D/W, so no good for my Deccas. I did try it out on a new Cadenza Bronze, and took photos of the stylus cleaned with a brush, and then with the S-Duo.
Plainly, it does work! I'd estimate the Hudson as running about 100Hz, and it does a mechanical clean, but not an ultrasonic one.