well.... in summer we have the greatest mouser in the neighbourhood - up at my in-laws cabin in the mountains she averaged 6 to 10 mice a day for weeks - but she'll still happily bring them in, alive and kicking, with a mrrr? look what I brought home for you too to play with, you lucky people!

And kazam, we have a mouse or two or three under the bookshelf.

But no, they don't come in of their own accord, that's true.