Answering My Own Question

We caught 13 mice before declaring our garage mouse-free. My husband caught 12 of them in humane traps.

And then there was the 13th.

One night, just as he'd taken the girls up for a bath and I said "I'll be there in just a second," I realized that Diva was inordinately interested in the girls' toys. "This can't be good," I thought. The last time I saw Diva that interested in an inanimate object it turned out I had squrrels living in my walls. In this case, I quickly realized that there was a mouse among the toys. It was a very small mouse, about 2 1/2 inches long, and I think I jumped about 100 times its height. I started to move toys and chase it around, and Diva continued to chase it around too, and grabbed it in her mouth and dropped it. If we'd had a webcam it would have been quite the sight as we both circled the room and I moved objects and jumped. My guess is that Diva brought the thing in from the garage through the cat door for her own entertainment. I tried to find something to trap it, and grabbed a plastic cup. It ran behind the bin-shelves holding toys. I couldn't see it. I feared I'd lost it. Then I realized there was a piece of cardboard on the floor, and I moved it. I jumped again. The mouse was under it. It ran to the corner of the shelves, and I realized I could block it in and get it to run in a shoebox (which I had around for the kids to play with). So I did that and caught it in the shoebox and put the box on the porch.

My husband took it to the woods out back to live with the other mice, though I don't know if "live" is the right word since there is quite the owl population out there. I did find out that my husband's preference for humane traps is not so much because he loves mice, but rather because he once saw a rat partially caught in a standard trap that dragged the trap and trailed blood around the house. Ick. I'm all in favor of the humane traps now. But I still hate mice.