I haven't seen a mouse or sign of mice ever since…

I'm out at a hunting lodge, and my truck, which is parked outside for the season, becomes INFESTED with the little devils while I am out here. I have tried all manner of things to eradicate them, to no avail.

I haven't seen a mouse or sign of mice ever since I plugged in that device [Ultimate AT] I bought from you! Yipeeee!