Thanks for the advice in regards to the residue.
I should have explained myself a bit more. I do use a brush such as
@nightowl suggested. They are terrific to move dust along the groove but find much less effective to remove the dust. With the disk in motion, I place the brush radially to capture the dust. If I simply lift the brush there is a dense line of dust on the disk. It's much better if, instead of lifting, I "wipe" the brush towards the disk's edge but most of the time there is dust left. The sticky pad would serve to remove that remaining dust, in a blotting motion on the disk, not a wiping motion. Hope this makes more sense.
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