In article ,
Peter Jason wrote:

Some yellow lights are supposed to repel
mosquitoes etc.

It's not that yellow repels mosquitoes, it just doesn't attract them,
and other insect, like white lights do.


Is there a color that will repel or dissuade
insect pests? I'm thinking of painting stakes or
trellises any suitable color.

Peter

--
Welcome to the New America.
http://www.youtube.com/watch?v=hA736oK9FPg
or
E Pluribus Unum
Green Party Nominee Jill Stein & Running Mate, Cheri Honkala
http://www.democracynow.org/2012/7/13/green_party_nominee_jill_stein_running