Stinging the Stingers

It's impossible to work with all this infernal buzzing! Do you hear it?$B$BI can't get it out of my head! I know exactly what's making the noise, too. It's those damnable marshlight bleeders! The noise always comes from the south and west of the village.$B$BThey're too big to swat, crush underfoot, or wave away. The only way to stop that unholy droning is to kill them. I don't care how you do it, $N, just quiet them!