Hi, I haven't read all of the posts but have you tried dusting with Diatomaceous earth? It's fossilized diatoms and safe for humans and other animals but deadly to most invertebrates with exoskeletons. It would be a good choice for using indoors, since it will kill most any bug that comes in contact with the dust. I've used it for aphids before and they are dead quite quickly.
Or, you could get a few ladybugs to take care of the problem.
