clean strings

Have any of you used an ultrasonic cleaner to clean dull sounding round would strings? If so, did it work well?

Ok, after literally decades of trying to find ways to keep that "new strings" tone and not spend a small fortune on new strings every time they begin to go dead, sometimes in as little as 1 or two weeks, and about 10 hours of play.. I finally found what works the best.. I have literally tried...

I've just cleaned my old strings by submerging them in denaturated alcohol. Posting my observations here in case somebody is interested. The strings were the original strings that came with my American Fender Jazz bass, most likely, Fender 45. I used them for around 15 months, so they should...