I have used the TC breech plug cleaner which is like the Jewelry cleaner and it works ok. The best and easiest success I have had so far is a cup of hot water with a little dish soap in it. Use a brush andpipe cleaner on it in the cup and a Q-tip on it when you take it out. Pick the hole with a safety pin and blow it out dry. It takes just about a minute to get it spotless.