They have been in our house for the past three winters. Talked to neighbors who have seen a huge increase in their numbers in their homes in the past few winters. I never had them in my house until about 3 years ago. They are completely brainless, just random motion and crashing into things, random landing wherever. The don't hurt anything, don't bite, just randomly fall in your drink or show up on your toothbrush. The only hint that they are sentient in any way is if something frightens them they emit an acrid, really unpleasant odor. The best way to get rid of one is carefully slip a piece of paper under it and throw it outside before it becomes alarmed. You can crush it in a wad of paper towels, but you end up with a fist full of stinking paper. Is the recent increase in them local or do any Pelicans have them too?
They are about 1/2 inch long and make a low buzzing sound when they fly - and stink like h e 11 if you scare them.