Defying reason

Somehow I have ended up with a little swarm of fruit flies in my apartment. They are not those extremely tiny ones; they have some substance. And yet, despite being plainly visible, they are impossible to kill. I wander around clapping wildly over my head like a lunatic and still they dart erratically around, entirely unfazed.

I truly don't know where they came from or where they are having their little fly orgies that result in still more flies. Nevertheless, I've done my best to dissuade their permanent residency. Basically, aside from the wild clapping campaign, my strategy has been to put all my fruit in the refrigerator.This is quite a sacrifice
since I am a fruit bowl user generally and don't actually enjoy cold fruit. Still, desperate times....

Imagine my dismay then when I opened the refrigerator this morning and four flies flew out quite cheerfully from its chilly depths.

Really?

What then? What then must I do? Burn down the house? I can just see it now, all my worldly goods smoldering in a black heap on the sidewalk. And what's that moving above the cinders? A plume of smoke? Why, no. I believe it's a little cloud of fruit flies.