I lived in a very old house growing up and we always had lots of mice. I found the spring traps were either all or nothing. You either had a whole mouse or th

I lived in a very old house growing up and we always had lots of mice. I found the spring traps were either all or nothing. You either had a whole mouse or they somehow set it off without leaving behind a trace (except they often return to get the peanut butter off the unset trap).