I put a screen on top of the chimney so no more critters can get in that way.
Good idea. Wild animals in the house is never pleasant. I opened the door to go down in the basement one day and there was a starling perched on the wire rack that hangs on the back of the door. I screamed and slammed the door, which sent him back down. He had to be escorted out in a fishing net and unfortunately this wasn't the last time it happened. They came in through the gas stove that we only use occasionally so now there's a cap over the vent when it's not in use. The dumb bunnies we have around here are another story!