Flying in the apartment: airing
There have already been a lot of tips on this topic. However, if you do not want to or can not use any of these tips, because too difficult, too easy, too little pet-friendly or whatever, you can do the following:
Make for 5 or 10 minutes draft, so all windows and possible doors on. The flies feel the breeze and like to haul outdoors. The apartment is then fly-free again. In any case, I have had the best experience with it.
Positive side effect: the airing has a great preventive effect against mold on the walls. (But please do not beat me now because this tip is so easy.)
