For a few weeks now, I have squirrels making noise intermittently in the chimney. Most of the noise they’re making is coming from the metal apparatus on the top of the chimney that keeps rain from falling down inside. Last night, I heard squeeking coming from around the base of the chimney. I wasn’t sure what type of animal it was, but when it was especially loud yesterday, I went outside and saw a squirrel’s tail sticking out from the top. They’re not actually IN the chimney–I think they’re between the outside of the fireplace/chimney and the siding (we have hardy plank). Is there something we can do to scare them away, or should I call a pest removal company?