String Cleaner

Australians: Violin String cleaner?

I have a violin - obviously - and I was wonderin about the effectiveness of string cleaner. My E string keeps rusting and it's getting rather annoying to replace it. I've tried keeping the area as dry as possible etc etc...nothing works. Help?

i've never tried this... but i've been told that you can use a small piece of sandpaper and wipe the rust off the string gently

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