This feels like it could be a challenge similar to that DARPA challenge to spot all of the red balloons as fast as possible.<p>Not nearly as trivial as observing a conspicuous balloon, though. But I&#x27;d like to think this could be reduced to a tech challenge somehow, through ambient humidity detectors, or something ridiculously straight-forward like that.<p>Obviously with enclosed structures, and plumbing being what it is, it&#x27;s probably not even close to being as simple.