So I notice the evidence of the typical house mouse.
Tiny poops that like like rye-bread seeds. Little shreds of wrappers and wood chips.
But what I didn't expect was our mouse's attraction to mustard.
While cleaning the basement, we found a rolled-up carpet remnant with several little mustard packs inside, nibbled open and sucked dry.
Our little friend had to climb up on top of a condiment-supply table, carry the pack of mustard with his teeth and scurry to the other side of the basement.
Never knew mice were attacted to mustard.
Looks like our only recourse was to take a cue from the game of "Clue."
It's Colonel Mustard with poison in the basement.