Yeah I have heard of it happening, but it is tough to come up with a explanation for it. It sort of defies what I know. I guess it is watching the containers and see if they breathe or do they bulge out and suck it in as the temperatures change. It could be when the container sucks itself in, that something happens to allow moisture to be wicked in through the bottom.
Fox Missile Mist fuel. Yeah that is the good stuff for sure. I think they still sell it from time to time too, but it is in plastic jugs now.