Hello and Welcome to Mrs. Clean.
After reading about your issue, I have a few suggestions. First, the best advise could be obtained by the manufacturer of your flooring. If you have that information contact them by phone or by web search.
If you do not have information on the manufacturer you can try a homemade mixture of 1 cup white vinegar to 2 gallons of warm water. Cider vinegar is different from white vinegar, and you should NOT use it as a substitute. Apply it with only a damp mop, and then you should wipe it clean with a dry cloth or clean dust mop. The vinegar odor will only last a few hours and is a natural deodorizer.
If the white vinegar does not do the trick, you'll either have to call a professional or you can use the more involved process below (which is what we do for our floors):
Removing stains from hardwood floors requires several steps. Generally stains will require:
1. Removing 1 – 2 layers of finish from the entire piece of wood
2. Sanding the area with the finish removed
3. Remove the dust from the area to make sure it doesn’t get mixed back into the refinishing process
4. Reapply the same finish being careful not to apply more layers than you removed.
5. Buff well.
More hardwood floor cleaning tips