When I was a kid, I made this crazy double barrel rubber band gun that STOMPED this kids (out of Knex). But damn, don't got those toys anymore, and... I got one hell of a fly problem. Was thinking of using a Aixiz module (as intended! ;D) the 5mW 650 for laser sight! You cant use even low power green, the flys flee! Can't burn them with the RPL (even focused) because they immediately flee (Yeah, it just got really hot! )! I think they sometimes see it before contact because they take off first lots of times.
http://hackedgadgets.com/2006/06/14/top-5-lego-rubber-band-guns/
http://www.therubberband.info/the_gun.php
http://hackedgadgets.com/2006/06/14/top-5-lego-rubber-band-guns/
http://www.therubberband.info/the_gun.php