Use lasers as a screen against bugs.
I know that they have used lasers to directly shoot bugs, but could
you set up a screen and zap bugs as they come through the window or
door? That way you could set up a screen house and still have an open
door to let the breeze and the bugs would use came through the door.
It may not kill them but it would still about a cook most of the way.
And that it could also turn off without human or animal approach to
turn back on when it was clear.