I started using mine years ago when I was using that nasty Trail Boss powder. My brass was so black that the vibratory tumbler just polished the black soot! So I started soaking them first in a 50-50 mix of Simple Green. Then into the dehydrator for an hour and a half, then vibrate another hour and a half. Came out nice and shiny! Going to wet has given me nice clean brass, but not quite as shiny as the corn cob with polish did! Good Luck!