We leave a snap trap set in our crawl space in the attic all the time. Inevitably there is a mouse caught now and then, especially in the fall when temperatures cool and they look for warmth and food. It's very difficult to find a place where they may be entering because the nasty little critters can climb, too. Bird feeders help to draw them into our yard, too, but we love to feed and watch the birds. I guess our best bet it to keep the traps set.
We leave a snap trap set in our crawl space in the attic all the time. Inevitably there is a mouse caught now and then, especially in the fall when temperatures cool and they look for warmth and food. It's very difficult to find a place where they may be entering because the nasty little critters can climb, too. Bird feeders help to draw them into our yard, too, but we love to feed and watch the birds. I guess our best bet it to keep the traps set.