Yeah, I hear that. I dunno. I was thinking if a mouse were pregnant and got away you'd definitely have a problem. For one thing, the little rascals GNAW!
Do try your Extension Agent. They can be really helpful for matters of household.
I was watching "Red Green" with my husband the other night and a mouse ran up someone's trousers. Do they really do that? If so, maybe I'll start using the chair method too. Just got a real woozy feeling about that one. . .