You probably don’t need to replace the entire subfloor. Urine can be a tough substance to clean off any surface, let alone porous concrete. When you share your home with pets, accidents can and do happen, whether you're training a puppy or dealing with an elderly pet suffering from bladder issues. In some cases, it is impossible to get urine odors out of wood. The baking soda will help draw out the urine and will deodorize the smell. I’ve used (at different times) Nature’s Miracle, SNiPER, Odormute, vinegar, hydrogen peroxide, and bleach. You can smell or see pet urine stains that no matter how much you bleach or wash with vinegar don’t go away. Shake baking soda onto the spot if you can still detect an odor. White vinegar is acidic, thus can neutralize the alkaline ammonia to an odor-free state. Once we got the padding up I saw how bad the wood was and tried cleaning it with bleach and a mop to get the smell out. Over time these odors can build up and linger even after the carpet has been changed. If you wipe away and the stain and smell is gone, you may be done. It will disapate as the alcohol evaporates. Look to the experts at ServiceMaster Clean for tips on how to remove urine smell from hardwood floors. Other Remedies for Dog Urine Odor + Stains on Floors. First remove the carpet or floor covering – you can’t get to the urine in the sub-floor through carpet and padding or linoleum. Well I knew the floor was going to be bad after the horrible urine smell that was left in the unit. I think kilz helps when you get the carpet cleaned because it keeps cleaning moisture from reaching urine activating the smell. I’ve just had carpets taken out in an area where a small dog had missed his pee pads often. Once this happens, you could be stuck with pet urine odor even if you clean or replace the flooring. This will probably be the most effect way of blocking the odor without replacing the subfloor. Urine get especially raunchy when there is … If you don’t have hydrogen peroxide, you can use vinegar or even baking soda to get rid of dog urine stains on your wooden floors as I’ve elaborated below: Use Vinegar Solution. How to Get Dog or Cat Urine Smell Out of Hardwood Floors. So you have a concrete floor, perhaps an area in your basement, garage, patio or under your carpet in your home that seems to be permanently stained with pet urine, a.k.a dog or cat pee. You probably don’t need to replace the entire subfloor. Pull up the carpet and pad and search the subfloor for urine stains. The odor you smell is from the crystallized urine in the impregnated wood. If you have a pet that's been using a basement, garage, balcony, or other paved surface as his own personal bathroom, you may feel like you'll never get the smell out, even though you washed it 100 times. If you decide to go with this, don't be alarmed by the smell. Cleaning subfloor pet stains and sealing them will ensure those bad smells don't come back. A contractor will charge $3k for this, you can do it for less than $500. From Wikipedia: Shellac is a resin secreted by the female lac bug, on trees in the forests of India and Thailand. Let baking soda sit for several hours. The contractor painted water based Kilz on the subfloor, and though I can’t smell anything, the urine … The odor you smell is from the crystallized urine in the impregnated wood. Subflooring can collect odors almost as much as the carpeting that is laid over it. Removing the old carpet and padding was pretty horrible due to the smell. Replacing subfloor sections is surprisingly easy especially if you are covering with carpet or laminate. Urine can penetrate carpet, padding, laminate, and other flooring, penetrating down to the subfloor below. If tile just cut out the grout and replace it. With particle board, the key is to work in small areas and work quickly so that as little moisture as possible enters the wood.