Not to fret Deirdra, this is a common problem. If you will check down the board, you will see this question answered many times. In brief, the answer is an enzyme solution from the pet store to get rid of smell, sanding or stripping the floor to get rid of the present finish, removing the stain with oxalic acid sold as "wood bleach" at home centers, and the refinishing the floor. It is a lot of work but should make your floor beautiful again. Let us know if you have any further questions.