How to polish/clean mech mods?

[The60WattGUY]

Hey guys,

I jumped into the world of mechs did alot of research on it before doing so..
But i still have a question brass and copper mods gets dirty and betinne after just a week of use what are some polish materials i can use to clean it and that is available in EU?
Will any metal polish cream work?
I guess i could just use vinegar?

Thanks guys

 

[borno]

Simichrome is a great polish, only thing is it smells like cat pee.

 

[mimöschen]

Plain, simple Ketchup. Sounds weird, but works very well.