ASubmarineSandwich I had no idea flies gave live birth. That explains how quickly one errant fly in my old air-tight apartment turned into dozens overnight.
Samisyosam Ideally, they lay eggs so that their children don't hatch and EAT THEM FROM THE INSIDE OUT.
RocketBlender Same thing happened to my place. one window left a crack opened seemed negligible the next morning when there was one fly around until the next afternoon. I solved the problem with this: http://www.amazon.com/Electric-Fly-Swatter-1500-Volts/dp/B000EPPFE C
Scynne Thanks for making me see that. Really. Thank you.