A dryer sheet in the bottom really helps keep down the dust and lets you use the media longer. When it takes a long time to clean the brass it is time to replace it. You can add stuff like Dillon brass polish to speed the cleaning process up. NuFinish will help as well, Nufinish also will apply a very thin polymer type polish to keep the brass from tarnishing for quite a while. It doesn't hurt the ammo or gun either.
It may not be in the interest of someone selling media to tell a customer how to make it last longer or quicker.
When you add things like polish to the media you need to do it when it doesn't have any brass in it. Run the tumbler at least 15 minutes (30 is better) before you add brass.
Last edited by Misssissippi Dave; February 16, 2013 at 04:14 PM.