Yeah no way around this, if you get the chains wet then a boiling water flush and immediate re-wax is the way, or coating it in drip on wax if you need to store it until you can get to it, and then do the boiling water flush before the next wax dip. I now have 5 chains rotating on 2 bikes so it works for me that way, though I stay out of the wet mostly.
Are all y'all chains stainless steel or not? Still a rust problem?