Where did these !!*!&#* bugs come from?

I think our remodeling project (photo update here for interested parties) has stirred up some kind of freakin', tiny bug infestation. It started with what looked like one miniature fly about a week ago but today I counted a swarm of eight of the little creeps flying around my sink full of dirty dishes. Since God decided we don't deserve a nice fall this year can we just go ahead and have a hard freeze to take care of these irritating bugs? I'm getting mad.