Q: Is there a product that will remove pet urine stains (black discoloration), which were found beneath carpet underlay?
Black Stains (a.k.a. Pet Stains)
Decades of Q&A about black urine stains in wood flooring, which are incredibly hard to get rid of. AKA Pet stains.
Staining to hide dark pet urine stains
Q: I am refinishing my 45 year old oak floors. When I removed the carpet there were 3 dark stains. I figure it is pet urine. Sanding is finished, but the stains are still visible. If I apply a darker (perhaps cherry oak) stain, will it hide the urine stains or will they just get darker?
Black stains on wood floors not fully sanding out
Q: We have discovered many black stains on wood floors after we pulled out the carpet. We tried to sand them out. While some got lighter, others did not. There seemed to be a smell of urine during the sanding, so I’m assuming that these stains may be from pets.
Black stains did not come out when sanded
Q: I just had older Oak floors refinished. They are approximately 40 years old. There were black stains in the hall way that would not come out when sanded. We kept the floor stain the same as the original but the black stains look horrible.
Pee peels
Q: My dog peed on our floor and we did not notice this until the next day. After cleaning up the mess, I noticed that the finish had lifted and peeled on one side of the wood slat. The wood in not discoloured but you can see where the finished has peeled.
Re-dampening urine stains
Q: I have old urine stains on my hardwood floors. There is no odour or buckling, just dark marks. When the moisture is high these areas become damp.
Urine stains
Q: We have recently removed carpet from a house that I have lived in for 2 years. The carpet had been down for 10+ years and it was used by the previous owner’s dog as a bathroom. Under the carpet is hardwood, but it has urine stains. The carpet pad was stuck to the floor and some of the staples were rusted. Upon removing the pad and scrubbing the floor, there are light stains left by the mess.
Dark watermarks from pet urine
Q: We took carpeting up from our bedroom which has hardwood floors underneath. When cleaning the carpet from pet urine there are severe dark watermarks. Is there a way to lighten the marks before sanding and refinishing?
Small pet stains on floating floor
Q: I found your web site while searching out how to manually try and fix several pet stains my dog has made on my hardwood floors. I have floating hardwoods that I believe were put in on top of a tile floor. Unfortunately the dog has had a couple of accidents in his old age.
Hydrogen Peroxide to remove black stains
Q: I recently removed 30 year old carpet from hardwood floors. I discovered some spots that were dark black (I am guessing pet stains). I applied hydrogen peroxide to them and after a few treatments, the black stains lifted and the wood was left white.