I use the Zilla with a used dryer sheet every batch and a cap full of Nu-Finish every 3000 rounds of 9mm or so. Nu-Finish isn't necessary but the cases are slick as wet frogs and pretty darn shiny after a two hour tumble. I highly recommend it and don't have any complaint about the dust. The deal from Amazon is killer and should last you a long long time as the media really doesnt deteriorate or require changing that often if you use Nu-Finish