Disgusting Fly Problem

It's amazing that even after 2 years of trying to get someone to take care of my fly problem in my apartment, still nothing has worked. I don't leave trash sitting around nor food, either. When the flies start coming in like they are now, and I'm on third floor by the way, then in another 2 days or more I will have at least 60 flies in my apartment every day and I am so sick of it. We have done everything we know to do and we still can't find where they're coming in at. So I was bombarded this morning with lots of flies and that means I'm going to have to pull the plastic from the large living room window where I thought they were coming in at and still do, because that did no good, and it's always around that window, I know they're coming in, but we still can't find where at. Absolutely amazing.

So now I have to rip all the plastic from the window and spray this horrible smelling bug spray that I just hate and it gets in my lungs just bring a little bit of it. I cannot stand the smell of it. I'll rip that off and then of course I'll spray the screens on the outside and then spray all the large window and I mean it's a big window and long, and then I'll have to leave the apartment for a few hours. I'll go get some fly strips. The Flies will still come in but as soon as they land on that fly spray they'll die in no time and hopefully I'll get some on the Fly strips which I always do but I hate looking at those things. They are sticky and messy I don't care what anybody says. I'm just so fed up with these flies. I'm looking for another place to live, but not necessarily because of them. I just need a bigger place.