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Soak it in a bath tub with dish soap and scrub out the insides of the tubes with a snake thingy (that's a technical term for those long things with a brush on the end you can buy at music stores). Scrub the valve casings with a stiff brush (i.e. toothbrush). Then rinse it all out really well. Then finish using silver polish on the entire horn following the directions on the polish.

what he said^ for a silver polish i would suggest hagery silver polish, u can pick it up at your local hardware store.

The soap-and-water cleaning is useful, but not to be confused with the needed chemical cleaning by a qualified repair technician once in a while. Some have their tubas cleaned that way once a year. I do so much less often. But soap and water will not remove the built-up mineral deposits that accumulate in the instrument.

Rick "who does both" Denney

hurricane_harry wrote:what he said^ for a silver polish i would suggest hagery silver polish, u can pick it up at your local hardware store.

I really like this stuff. Pick it up at an auto parts store:



Rouge is the polishing ingredient. Says so right on the can.