Poster: Let me put in my Two cents.
From my own experience, and logic you can deduce that this mouse who heard of your reputation as a wonderful host/ess was eager to set up residence in the crevices of your house with his/her entire family.
Because the mouse that you saw, probably has a father and mother. And brothers and sisters. (Hope I didn’t scare you too much.)
In my humble opinion, you should not fill your entire house with mousetraps. It’s a waste of money and effort. They are shrewd little animals. Hashem gave them that instinct for survival. But, like everyone else. Sooner or later they will make a mistake. And they will land on the one, or two traps (preferably glue traps) that you put out.In the dark, and the stillness of night when they come out to forage for food, they will be caught. One by one.
But until such time, rest assured that the mice are more scared of you than than you are of them. Sleep calmly. And if you wake up in middle of the night to a squeaking, squealing sound, you will know that they are trapped. Put them (Those that are caught) along with the trap in a plastic bag and dispose of them….End of story…!