The result should then be sprayed and wiped onto the exposed surface of the floor.
How to remove yellowing from hardwood floors.
The procedure for removing dye that has penetrated the wood is similar to that for removing black water stains but after sanding off the finish use chlorine bleach to remove the dye.
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.
Work the mineral spirits into the wood.
Step 1 place enough paper towels on top of the stained area to cover it fully.
Wipe away any excess.
In this case you re beginning to remove the protective polyurethane layers.
Clean the sanded area with 00 steel wool and mineral spirits or a wood floor cleaner.
Remove the wood finish over the stain with 100 grit sandpaper.
Let the floor dry then stain wax and buff by hand.
For floors finished with wax or penetrating stains very gently rub the water stain on the wood with 000 steel wool and wax.
In order to create the solution you have to make a mixture of one part bleach and four parts water.
Apply a layer of mineral spirits to the dark water stained area using the steel wool to lightly scour the floorboards.
Coarse sandpaper is best for stripping away the wood finish.
Removing the stains requires an oxidizing and bleaching agent like hydrogen peroxide.
Work along with the grain of the wood.