There are many things I love about our 450 year old home but the mice are not one of them. After three confirmed kills the previous week, I heard the little buggers racing through the walls above me as well as chewing the wall next to where we sleep. Enough so that I was no longer sleeping.
The next day I placed these three traps and had two confirmed kills the next day. Guess what I did not hear last night–racing and gnawing.