We live in and end terrace which has a carpark to the side with a large tree in it. Each year the tree causes some flies and it is very annoying. This year it is a whole other level. They are everywhere. Walking to the car you get them on you, they settle on all the cars, they are now in my garden and once the sun goes away from the front garden they are making their way round to settle on the front of my house/fence etc. I have cleaned every inch of my house outdoors and sprayed with lavender. I have left out vinegar and dish soap which has caught a measly 3 flies. I can’t possibly open any windows on a hot day or I’m going to end up with a house full! What can I do about this? The tree isn’t mine so it’s not like I can get rid of it, I assume it’s a council tree. From what I can gather from Google they may be fungal gnats but I’m not sure.