Thus far no sightings or signs of the critters since putting those Victor subsonic anti-mouse towers in place. A couple of the devices are audible, but mostly not - there seems to be some variation among the same model. I placed the audible ones in the least-used rooms. Still trying to trap, with no subsonics, in basement where the crawlspace is but no bites there. Overall, 4 out of 5 stars to the Victor subsonics. Haven't gotten the ladder inside from the yard to check the attic yet - I may wait and have the pest control folks do that when I invite them to check the interior next month. Also have 6 traps set in the subsonic-protected areas and no activity with any of those. Still, I did see one ten days ago, after the pest control guy was here, and that one may still be hiding in this house somewhere.

Good to hear the Victors are working for you. Hope your unwelcome guest has snuck out.