Oxalic acid applied to the stain will often remove it but it also ruins your floor s finish and you have to re stain and refinish the area to match the rest of your floor.
Remove dark urine stains from hardwood floors.
There is a way to remove urine stains on hardwood floors that works well for most stains and you won t have to refinish the floor.
One idea is you may sprinkle a generous amount of baking soda on the urine stain.
Unless you are refinishing the entire floor you should opt for the same type of finish that remains on the rest of the hardwood.
The heat of sanding and refinishing can bake the urine crystals into the wood and make odor and stain removal much more difficult if sanding and refinishing is done first.
Simply moisten the rag or soft absorbent cloth like felt and apply to the spot.
When the color is right and the floor is completely dry apply a protective wood finish.
Hydrogen peroxide may bleach the section of your floor.
It is best to avoid getting these types of stains as they are difficult to remove but if you already have black urine stains on your wood floors you can attempt to remove them without refinishing the whole area of the floor.
Soak a piece of cloth in hydrogen peroxide and place over the stain overnight or at least 8 hours during the day.
Remove urine from hardwood floors with baking soda.
Treat the affected area with a stain remover before refinishing.
Allow the rag to sit for few hours to thoroughly remove the urine stain and odor from the hardwood floors.
In many cases sanding can remove the damaged wood so the flooring can be refinished.
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Repeat for longer hours if the stain is resistant.