Isn’t bleach what you use to rust steel wool for kids’ science experiments?I've heard that for years. I remember the first article I read in a magazine about soaking strings in bleach and baking soda then boiling them and all sorts of hoodoo...
I just play mine, wipe 'em down after playing, and when I can't stand the way they sound, I change them.
I have a friend who says boiling them DOES work, and I respect his opinion, so all I can say is try it.