I’m not extremely particular about having my brass looking like a mirror; however, if it hits our black land soil and gets wet once it does get discolored quite a bit. After reading about the vinegar solution I decided to give it a try. I have a bucket of brass that is heavily tarnished (too far gone for even me) that I keep for recycling. I used a handful for this test.
I used the solution of :
1 pint water
1 cup vinegar
1 table spoon salt
1 tea spoon detergent
After shaking for 10 minutes I rinsed them off in the sink.
The solution did clean almost all of the tarnish of the brass, in the process, it turned many a pretty pink color (not sure if that’s any better than black). I’d say it works, sort of, but with the time spent you could chunk them into the recycle bucket and pick up 10 times the amount from the range.