This has nothing to do with lasers, but I couldn't resist. For my last birthday my son gave me something called a "bug-a-salt-weapon." It's a spring-operated gun that fires a pinch of table salt. Nailing a fly while it's in the air is pretty tough, but when one lands on a surface, the gun is deadly. One shot will not only shred the insect's wings but kill it. I've even killed wasps with it, once they settled on something long enough for me to make the shot.
Got to find me one of those...