I started throwing a used dryer sheet in my tumbler with each load of brass--it works great. I am not as picky as some may be about the shine. I do not use any polishing compound and run the brass for about 6 hours, take it out and load for 1911's, Glocks, Sigs, in 9, 40 and 45--no issues with reliability. The dryer sheet seems to keep the media clean by catching the dirt.