Gonna bump this again while I'm here on Permies. It's been a constant struggle with these mice, but situation has typically been manageable. I was able to rid the cabin of them last winter and things were quiet until spring/summer, when the struggle started again but it was tolerable.
But this winter things have gotten rough. They didn't clear out and in the last week things have just gotten out of hand. I've heard what sound like wood rats or possibly even small squirrels (?) in the walls, and it's been a nightmare at night.
The big problem here is that the previous owner of this cabin did a shoddy job renovating this old structure. The cabin interior is wood-paneled, with insulation behind it, but there appears to be pretty substantial space in the wall cavity, which allows rodents to pretty easily move about. The cabin frame, as I mention, is quite old and doesn't have a proper foundation, and there are simply too many gaps around it to realistically seal the whole thing up.
We're living here temporarily while we work on a proper house, but this rodent thing is so irritating. Note that we have virtually never seen them *in* the cabin, just hear them in the walls. At other times of year, traps outside (on the roof, under eaves, on storage racks attached to the back of the cabin) plus a mint spray inside/outside are pretty effective at flushing the rodents out and catching them. But now that it's cold, they are pretty stubborn to leave. I really don't want to use any kind of poison but am getting awfully worn out by this.
Any brilliant ideas?