I’ll add some tinder to the fire.

I have an indoor bug zapper. I set it next to a window and it gets the bugs that are inside. Does a great job. But always intermittently some small fly will fly into it. Even when a door hasn’t been opened.

I joke, but I’m semi convinced that 1 in every few billion try’s, the tiny flys make it thru the glass of the window. Where else are they coming from ? lol.