Everybody has seen those insect zappers with the "blue" light? They'll attract bugs from all over
and ZAPPPPP them.
Oh sure one or two mosquitoes may bite you on it's way to the zapper, but hay,
THEY'RE GONNA DIE! 
That's has to be some satisfaction right?
Not really. If you give one to a neighbor a couple of houses away from you, they'll leave your yard and head straight towards them.
