Vinyl static ionizers who's used them?

There's an obvious effect that the Destat III has in letting a rocket blower remove dust that otherwise won't blow off. I'm not aware of hearing static pops one way or the other, so I do this just my stylus's sake.

There is something unclear to me though, and the Destat III comes with rudimentary instructions. Is there any benefit to repeating it on the second side? I don't think there is, but static electricity is like black magic to me. If I blast one side with (I think) negative ions am I just creating a positive charge on the other side?

Can anyone explain how a brush might, theoretically, remove static? If the bristles were conductive and grounded I could see a mechanism, but not otherwise. That may be pure ignorance on my part!

Thank you, that makes some sense of it for me.

Big Clive on YouTube has deconstructed many ionisers, some real and some fake. I don’t think they have to be very expensive or complicated to actually work.

I'd post a link to a serach of his videos on the subject, but each time I try Audiogon tells me I am blocked.