Last year we moved into a new house which has oak flooring throughout the kitchen and hallway. We sweep it regularly & use a Bona wood cleaning spray-mop thing, but whereas the floor used to have a nice shine to it, it now looks quite dull. Do you know of any good polishes/treatments we can use on it to brighten it up a bit, but to also help protect the floor against scratches? I've seen lots of oak furniture polishes online, but none which seem specifically for floors, and I don't want to turn it into a skating-rink!