Lemon Shine + warm water in a sonic cleaner to restore brown or green corroded brass. They come out with a little copper left over that you can wipe away with fine steel wool and they look almost new.
I use the reptile bedding in an RCBS vibrator. Leave it outside with lid off so the wind will blow the dust away. I then wash the brass in water with dish soap then rinse. Spread it out on a towel to dry. I go for clean but not polished.