How do you clean tube pins?

Ill often use 0000 wool and DeOxit. Not in tube sockets, pins are okay. Inspect and blow them off with compresses air then apply a tiny bit of dielectric grease where its suitable. I like putting it on RCA poles it saves having to wrestle some of the very tight ones off and potentially breaking something. 

I forgot to mention good hobby stores usually have an array of cleaning mini utensils and mechanical tools for RC that can come in handy.  

I should also say I trust the lightest steel wool. One or two even three cleanings will not remove a quality plating it just isnt aggressive enough. By the time it would it wiould have taken countless cleanings by then it would be time for new tubes anyway. I use it on open grain fine furniture if it needs a good cleaning among other things. I can see how people would think "yikes steel wool", the light stuff isnt as aggressive as some may think. The name implies disaster and there can be some truth to that. I would probably option something else when it comes to something like an auto finish or jewelry, eye glasses, that sort of thing.