Mike--We are also dealing with an invasion of fruit flies, and we, too, have found that the vinegar traps are only somewhat effective. Some of the flies look larger than the usual fruit flies. I'm wondering if I need to use larger holes in the traps.
Does the Black Flag bug zapper make a noise when you use it? I ask because our dog is very sensitive to sounds such as hammering, gun shots (hunting season and people target shooting is a problem here), or even the smack of a rolled-up magazine or a fly swatter.
Yes, it makes a snap and you'll see a flash of light.
I think I got 3 dozen of them first thing this morning. I think we're making a dent in them, but what we really need to make sure is that we don't have any produce out or other places where they can breed the next generation. Adult fruit flies can live 3-4 weeks, so it won't be an overnight cure.