[Blarg]

I've found things like leaving open beers or sodas can kill a lot of them, but probably more of them feed away and then run off to go reproduce.

Bug-bombing your house does seem to help.

I'd suggest checking your screens for holes, and being especially careful about leaving standing liquid around. Bugs can find food easily, but water is much harder for them to find. So don't make it any easier on them.

I've also found that flypaper can work very well, but it won't eliminate them, and makes a mess and is inconvenient.

Also, making sure all dishes are washed right away, and keeping your food-type garbage always in a plastic bag you keep sealed up helps. Basically, clear away all standing food or liquid.