What do I do about the mice?

[JudyM]

8. The sonar thing worked for me this year (only)

So what I did differently this year:

The very first time, and then every time that I heard them scratching around I started slamming a metal pan against that wall, hard and erratically like a crazy person. Then I immediately plugged in the sonar thing right next to that wall, but only for about an hour. I plugged it in at odd times every day for varying periods of time, accompanied by a lot of pan-slamming whenever I heard them. Within 2 or 3 weeks I never heard from them again, all winter, and this is the first winter that happened. I think I might've still had a couple in the house but I think I kept them from nesting, though I know nothing about mouse nesting habits. Just my impression.

Also, the best thing is to try hard to figure out where they're coming in from. They don't like aluminum foil if you find any holes you can't plug with cement or caulk or whatever.

I also heard that cinnamon oil repels them but never researched its accuracy.