It seems that my apartment building is having a fly problem. We thought it was just our apartment, and wondered why, about a month ago, we began to be infested with them. I mean infested, so that we were killing 30 or 40 per day, and (of course) new ones always appeared in their place, and we had no idea where they were coming from.
Bought a fly zapper — helped, but not nearly enough. Walked around with fly swatters in our hands. Same thing. Our building’s exterminator couldn’t come for about a week, after we told our super about the problem, so we called NYC Pest Control on the basis of all the fantastic Yelp reviews.