We keep a spray bottle filled with the solution below on the counter and use it as needed. We apply sealer once a year.
•1/2 cup rubbing alcohol•2 cups water•8 drops dawn dish soap
Your best bet will be white or red oak. In any kind of wood, I would recomend you to do the finish coat with BONA HIGH TRAFFIC, is the hardest finish yo can put on your floors and is water base.