My experience killed two mice at my apartment.
Mice generally came to my aparment through cracks in the wall of my kitchen
in winter when there was not much foods available to mouse. I killed one mouse in a
plastic shopping bag last winter.
This year one mouse got to my apartment in the spring and refused to leave,
but I finally killed it in an open handbag two days ago.
My trick:
Step 1: leave some foods (like snacks that smell good and taste good to
mouse) in an open container as a mouse trap (like a plastic shopping bag or a handbag with some plastic bags that help mouse make audible sound to you).
Step 2: get a weapon like a wooden bar, metal bar, baseball bat,or whatever
like that.
Step 3: stay up late at night with dimmed light.You stay on alert and on
guard with your weapon in hand.
When mouse is really hungry, it'll come out for foods at night or even at
day time. It'll find your food in an open container. You can also place your
mouse trap somewhere that is easily accessible to mouse and you. Whenever
you hear a sound that is made by a mouse in your container (mouse trap) at
night, it means that mouse is now in your trap and eating your foods. Go
quickly but silently to your mouse trap and close the bag (plastic bag or
handbag), then you can fold your bag and stomp on it or you can smash your
bag with your bar. Be sure not to break your bag. If you don't want to kill
the poor mouse, you can release it outside your home/apartment, but keep in
mind: the mouse most likely will find a way back to your home/apartment,
since you're so nice to it.
When mouse is in your bag, it takes longer for the mouse to respond to its
danger and escape. You should have enough time to get it. When mouse is free running in
your room, it's almost impossible to catch it. Mouse is smart.
Prerequisite: You're not afraid of mouse or handling mouse.
Good luck.