Hydrogen peroxide will lighten the stain with successive applications.
How to get dark stains off hardwood floors.
Test an application of hydrogen peroxide in an inconspicuous area of the floor.
Another option is to combine vinegar with baking soda to make a paste.
To remove dark water stains from wood floors you have two options.
Bleach might have been used to remove the stains from your white clothing but it can do a great job at removing hardwood floor stains as well.
Adding grapefruit oil to the mix can help with the odor even more.
Then scrub it into the stain using a circular motion.
Use this solution to scrub at the stains.
The result should then be sprayed and wiped onto the exposed surface of the floor.
Scrub the bleach into the stain with a toothbrush.
Make sure the toothbrush is clean and unused so you don t get any stains on the wood.
Hydrogen peroxide is also suitable for removing the dark stains and the lingering smell on hardwood floors.
You can dilute the peroxide with water at first working up to a stronger solution if needed.
Soak a cloth and apply to the dark water stain and allow 5 to 10 minutes for it to work.
Dip a clean toothbrush into the bleach and swirl it around.
Make your own hardwood floor cleaning solution by mixing a cup of white vinegar into a bucket of warm water.
Dip a small brush such as a toothbrush into a small amount of bleach and rub onto the stain.