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I have spots on my bridge and knobs! HELP!!

A picture tells the story. Can this be alleviated?
20170604_082758 (1).jpg
 
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Oxidation.

Post from biker forum:
"* SO HERE IS THE TIP........... Aluminum FOIL. thats right aluminum foil. all you need is a little folded up piece of aluminum foil and some water. Wet the foil and with some gentle pressure scrub the effected chrome concentrating on small areas at a time. at first it will feel ruff and will slowly smooth out. you will see the water getting dark which is actually the two metals creating a chemical reaction and forming its own polish. The water acts as a lubricant and aluminum foil is softer then the chrome so it wont (shouldnt) scratch the chrome. it should be a quick process. ex each mirror took about 1-2 min. switch the foil every now n then."
 
White distilled variety?

I'm not sure if it would make a difference if it's balsamic or cider vinegar, LOL
but I've always used plain white (clear) vinegar
I've got a gallon jug of it under the sink!

because I broil/poach stuff in it
when there's not enough pickle juice in the fridge
 
In engineering terms, this is called white corrosion. Sweat, high humidity environment will results on this. I'd check with the manufacturer to understand the bridge and knobs material and finish and then using a mild acidic solution like some recommended, clean it and keep it dry. Lemon (Citric acid), vinegar (Acetic acid) are pretty good with this in general. Forgot one thing: Store your bass in a low humidity environment.