L.R.
diatomaceous earth. I just learned about this stuff - it's safe around kids - just ground up beetles, etc. A friend swears by the stuff for killing off ants. They even sell it food grade! I'm planning to get some on my next trip to the hardware store (major hardware store - the little place around the corner didn't have it - argh). If you try it, let me know how it goes! We are not at infestation level yet, but it's getting started.