"A mixture of white vinegar and lots of table salt works pretty good. FWIW it wll shine up old coins also."
A 50:50 mix of vinegar and water and a 2-3 hour soak will do fine, no salt needed. Slosh it around a couple of times for best results but even that isn't necessary. Afterwards, FLUSH it well and spread it out one layer deep. Let it dry a day or so to make sure the interiors are fully dry before loading or storing, moving air from a fan helps speed drying, a lot.