I use it in combination with my corn cob. I use the ultrasonic first but with trailer brightner for tractor trailers. it shines and cleans the inside like new. then use the corn cob media to finish them off and to dry the casings faster. it is an extra step. or station the cases go through. It gets the inside of the cases that the media wasn't able too. I only use mine for rifle cases. the media works well on the pistol alone so I don't bother giving them the dip.