I used crushed walnut pet bedding plus dryer sheets for dust plus the occasional additve for a few years. Then someone I respected told me that corn cob COULD polish/clean better. It also COULD have almost no dust, last longer, require no additives that add cost and can gook up the works . . . all while leaving nothing stuck in the primer pockets or anywhere else in the brass.

The specific product required is small ground corn cob blast media, 425-1000 micron range . . . like this product: Corn Cob Abrasive Nlasting Media .

You still need some process to separate the media from the brass (I use a rotary separator for about a minute), but the keys are the dust has been lost in the sieving process and the particles are too small to stick anywhere.

Other stuff can certainly be used, but the ones I've used each require some other product(s) to offset the disadvantages.