Lions and tigers and bears, oh MICE!!!!

A couple weeks ago while my parents were here, I was sitting in one of our chairs in the living room and a mouse ran across the ottoman right in front of me. I HATE mice. And we couldn't catch the darn thing. My cat, who is extremely lazy, caught smell of it that evening, but couldn't catch it either. The cheeky little mouse ran up the curtains right beside my cat and walked across the curtain rod. By the time we got up to get rid of it, it vanished. We've caught sight of it a few times in the past couple weeks, but haven't been able to catch it with the mouse poison or the mouse traps yet. It's a tricky little thing, and Charlie has no interest in coming out of my bedroom during the day unless it's to eat. :) HOWEVER, last night I heard a noise and I looked over, and that darn thing was taking a candy corn out of the bowl of candy corns sitting next to the chair. I was in the leather chair with Brecken. It ran back down the table. Josh pulled the couch out, and saw it go underneath the fireplace. (There's about a 6 inch gap under the fireplace and cracks that go somewhere, out to the garage, I'm assuming.) So I watched the fireplace while he ran to his friend Jared's up the street to get some plywood and he drilled the plywood into the bricks and then caulked around it. Hopefully that took care of the problem. We knew it was back there somewhere and set mouse traps and poison, and when Josh checked the trap a few nights ago, it had shut, but no mouse inside, so he had to re-set it. Stupid mouse. Hopefully it is GONE!!! It gives me the heebie jeebies.