How to clean tubes

My wife, the sweetheart that she is, while dusting around my amp offered to "clean the lightbulbs in the dishwasher". I didn't believe she was serious at first but she continued to insist on making them "nice and sparkly", after all company was coming. I didn't know whether to laugh or not. Finally she cracked and couldn't keep the joke up any longer. I laugh every time I think about it. Sound familiar to anyone?
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I let my wife polish my tube any ol' time she, or not!

I've washed tubes in the sink before,... like 100 6SN7s at a time...... works pretty well if you are gentle with them. I wish we had a dishwasher - that would be even better.