I know there are numerous recipes out there to clean brass. This solution is however concentrated. I tested my first batch using it and it worked for many hours on hundreds if not a thousand cases different sizes at that from 45acp to 7MM and .308cal no 9mm, for the 1oz i used. the Brass does come out very clean inside and out. Something a dry media tumbler doesn't do very weill with bottleneck cases. It does take a longer process after I run the sonic cleaner, i tend to leave the brass soaked in the solution over night just for kicks and even though the sonic cleaner isnt running the brass comes out nice. I then take the brass out and lay it flat on an old towel in the garage and let it dry naturally while I'm at work. by the time i get home you can start reloading. Excellent product for the price. Also i do not have the H*****y sonic, I have a Frankfurt so it will work in any sonic cleaner.