I get the feeling that some here might think that dew falls onto there vulnerable surface rather than forming due to small temperature differences.
This article gives a good insight and may change the way we try to battle the beast!
http://www.astro-tom.com/tips_and_advice/dewing.htm
It was interesting to see the two different interpretations of the expression "Homebrew" by jjjnettie and Astroman.
Rgds
Michael