How effective is the Onzow Zerodust?

Zero-dust is good for taking schmutz off the stylus, but its not a substitute for a good periodic wet cleaning.

My 2 bits :Careful use of the ME should be mandatory. No other stylus cleaning regimen comes even remotely close.IMHO the Zero is a useful adjunct to a ME based routine. I use the ME for every play and occasionally the Zero. What the Zero does is remove micro strands that otherwise remain. On a standalone basis would not recommend the Zero, YMMV. A small LED torch and a 10x glass are more than useful for gauging stylus cleanliness.
Cheers

For the discriminated Analog Listener

Audio Technica AT 637

Try to get one, really good

Syntax, is that some kind of vibrational cleaner?

Go with Magic Eraser. It really works great. I strongly recommend adhering it to a coin(for weight and convenience)and lowering the arm into it a couple of times. Vs. the method mounted on a toothpick, it seems less likely to do any damage. Cheers,

Spencer