I used to be a nut when I was into Vinyl in my youth. I replaced inner sleeves in my Albums with "Angle" antistatic sleeves, had a "Dust" collector Tonearm gizmo, and of course used a Discwasher.
All this discussion made me think about it and I remembered I still have 2 Discwashers even though I still have only a few Albums as I went Digital ages ago. So I went into the storage room, where we keep stuff that probably should be recycled but we just can't part with it, and dug out one of them, still in a Ziplock Bag so the Fluid wouldn't evaporate -right next to our two Technics Turntables which haven't been used in ages either. Here a photo of it.
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It still has the original Brush to clean it off and is 1/4 full! I used a Lint Brush to clean it, so I doubt it was cleaned any other way. This one is a bit dinged up as it was the first one I bought, but the other one is better but the bottle & cleaning brush are missing.
Of course I'd finish off the cleaning with a Zerostat like in the photo below.
I'm certain I still have it too somewhere in all that stuff!