Heard something scuttling and gnawing last night above our head, have checked everywhere and it hasn't got in the house (yet) but can't work out where it's got in or how to get rid of it (not heard it now for hours). Could it be a squirrel? It sounds bigger than a mouse and I can't bear the thought of a rat. Will get someone out later if I can or Monday if not, will they get rid of it easily as I have a huge mouse phobia?