ONE fly got into my apartment about 3 weeks ago when the kitchen was renovated and the doors were open all day. I was not able either to kill it or else redirect it back outside. It must have laid eggs (and maybe the eggs laid eggs too), because since last weekend I have had a LOT of flies in the place.

How do I get rid of them? I got some fly strips from the management to put up around the place. NOT ONE FLY has gotten stuck on any of these. I checked over at Ace, and it looks like the other stuff available is toxic to pets (I have 5 cats).

What can I do? I hate these dirty things being all around the place.