re: Small mice not triggering snap trap

Walmart or Lowes sell those cheap snap traps with the bent metal triggers. You can bend the part that holds the bar thing to make it super sensitive.

The added bonus is that you won't have to worry with a stress test for a while. It will snap a time or two when you try to put it where you want it. Use two traps side by side, perpendicular to the baseboard. I only use those traps when I have one I can't trap. My nerves aren't up to it.

ETA: Extra crunchy peanut butter on the top and bottom of the trigger.