@GregMo, very cool! Thanks for posting!
The next question, of course, is have you tried any of these on a Moteino?
It seems as if the liquid CorrosionX would be the most useful (and least messy) if you can just dip your circuit board and connectors into a bath of this stuff.
I'll be deploying some new Moisture sensors this spring, I'll be trying this out!
Tom