Update: We STILL have mice.
We didn't catch any mice in our live traps in the 4 days we left them down before leaving for the holidays. Each night we were woken up by the tiny sound of tiny jaws grinding. I'm not sure that they can get into the actual living space yet; they may be trapped in the walls.
We left for 2 weeks of holiday traveling and visiting. We left the Pest-a-Cator 2000 plugged in but picked up the live traps. The packaging says that it may take 4 weeks to cause an effect in the mouse population, and recommends the use of traps in tandem with the device.
Last night, after leaving the house alone with no inhabitants for two weeks, there was NO sound of small grinding teeth! I'm thinking the Pest-a-Cator 2000 might have actually done some good. I have set the live traps again, just to be sure, but there are no signs of mice in our house. I am surprised, as I expected total infestation upon our return!
The Pest-a-Cator 2000 works by gently pulsing the electricity stream, which apparently drives mice batty. There seems to be no ill effects; the computer is working fine, as are the other appliances. The dogs are sleeping and unstressed, and us humans have noticed no effect on our mood. I believe I will leave it plugged in indefinitely.
UPDATE: We STILL have mice (and just caught one)