Dark stain circles on very old floor

Q: I just moved to an old house from the 1800’s. The wooden floor is very old and has very dark stain circles on it. I have tried getting it off with soap and water. It won’t come off. I was told I can’t sand the floor because it is too thin.

Is there a dark enough product that can cover it to still make it look like wood, or is there something that can take out the stain?

A: Not that I can think of. If, and it is likely, that this is a wax finish, a product called Renovator by Dura Seal will help to clean it up. I doubt it will remove the water marks. www.duraseal.com