Fall Means the Return of the House Mouse
If it's Fall, it means mice are about to find their way into garage and probably kitchen. It's never more than one or two, but even in our solid stone house they manage to find a way in.
The simplest way to catch a displaced mouse is with a "Tin Cat" mouse trap available from Gempler's or any other farm or pest control catalogue or store.
Though I'm more than a little skeptical about the claim that a trap can catch 30 at a time before rebaiting, there is no doubt that multiple catches are common. A glass panel in the lid lets you know if you have been successful, and the still-alive mice can either be let go or (in our house) tossed out alive for the dogs to chase. The dogs nail most of them, but I always make sure the mice have a fighting chance by releasing them on the edge of a very large ivy patch. If the mice can make a weaving dash for three or four feet, they're as good as gone in the thicket.