Liver trouble can also result in urine that is musty smelling.14 Because your liver needs to break down urea in the body, if it malfunctions it causes excess buildup of ammonia. The ammonia passes out through your urine, causing that trademark foul smelling pee.15
Use only 3% Hydrogen Peroxide. Do not use Hydrogen Peroxide that is higher in concentrate than 3%  Bleaching may occur on some carpets with a stronger solution. Read the label on the Hydrogen Peroxide carefully. The label will state the strength.
But at just over 5 feet, the hose is average-length. This model might fit the bill if you have a smaller space in a one-story house; it can cover only 15 square feet on one full tank of solution. (Some machines cover twice that area.) But you’ll end up with a carpet that dries easily because this Bissell scores an Excellent on our dryness test.
One possible cause that i haven’t seen here is that you dog/puppy may have diabetes. My puppy was not getting house trained so i took her to the vet to only find you she was very sick. If you still have problems contact a vet/trainer for help.
The enzymes also destroy the pheromone in the urine stain. This is something I personally have never smelled, our noses can’t, but while vinegar may rid the urine smell, it will not destroy the pheromones. Also because my husband owns a carpet store, I can tell you a lot of times people clean the carpet, but if the urine is still in the pad underneath, or the sub floor, they are chasing their tails (pun intended) you need to be sure the pad and floor are also cleaned with the enzyme cleaner.
CR’s take: This Hoover performs at two extremes. It gets the poorest marks for cleaning of all the carpet cleaners in our tests but one of the best scores for leaving behind a dry carpet, an Excellent. It does have some nice convenience features, such as separate tanks for clean and dirty water, a 100-inch hose, a carrying handle, and brush attachments. Unfortunately, features don’t make up for poor performance.
For most of us, budget will also figure in at some point but if you’re looking into making sure that you’ve actually got the best things possible you might want to ignore this factor. If your Great Dane has the amazing ability to urinate impossible, borderline equine amounts all over the floor it doesn’t make much sense to just go with the cheapest option
Replace the padding underneath. For stubborn stains that you suspect may have soaked through the carpet into the padding, replacing the padding itself will help a lot. Pull up the carpet, cut a sample of the padding and bring it to a home improvement store to find padding of equal thickness. Cut out the stained padding and replace it with a piece of the new padding.
Once the area is clean, make it unattractive and/or unavailable to your pet and the appropriate bathroom area attractive. As long as your pet can smell their personal scent, they will continue to return to the “accident zone.”
You could certainly try my method but I’m not sure how effective it would be after steam cleaning. However, the black light would definitely help in identifying an individual area you could treat and see how successful it was.
Wash urine collection devices thoroughly. Disinfect reusable parts with commercial cleansers or with a solution containing one part white vinegar and two parts water. Don’t bother with bleach, which is harsh and does not dissolve urine crystals as well as vinegar.
Sophia: I really need to do something about this problem in the house we just moved into 3 weeks ago. Before we moved into this house we had the entire carpet professionally steam cleaned. The carpet cleaner could smell dog urine as soon as he came into the house (it was a rainy day). It has been three weeks and we still smell it in a couple of the rooms.
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My dog had an accident in the bedroom so I pulled back the carpet cut out the underlay washed it thoroughly with normal washing detergent bleached the floorboards then laid a bin bag on the floorboards with some kitchen towels on top I placed the carpet back down and rinsed the carpet through with warm water and washing detergent replacing the towels as i went along until they were clear and the urine had gone after scrubbing and soaking up the water the smell has now gone the underlay is back down with the carpet and there is no stain or smell in sight
I didn’t have any fresh urine stains, but there is a spot that was my puppy’s favorite before he was fully house-trained. This product has a pleasant smell, and definitely gets rid of any doggy odor. I put two bottles in my carpet steamer, and the whole house smells great now. I tried it on a spot where my cats had a spat (cat spray!), THIS PRODUCT WORKED. The only reason it’s not five stars is because the bottles are TINY.

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Does it have a good look? Sure. But that’s about it. I bought this from Walmart not much over a year ago. Worked good for the first few months…not great, had time to time issues with the system drawing the liquids from the chambers. Got worse and worse over time. Not long after a years worth of use, which just so happens to be just beyond the warranty, it’s not drawing liquids from either chamber, the main suction area doesn’t work any longer…and the attachment suction barely works. On top of that…it comes with one of those power cords that tangles extremely easy upon itself. And where the power cord comes out of the machine is terrible placement. You have to fight wrapping and unwrapping the extension suction around the power cord for each use. Still not done. Small carpet fibers easily get pulled into the suction areas of the machine, to places where it’s impossible to remove the carpet fibers without breaking it open. Poor design…poor machine. STAY AWAY FROM THIS MODEL!!!
Quick question for you – do you have a recommendation for an odor removing recipe that can be used in a carpet shampoo vacuum? I do not want to buy a regular shampoo from the store as my vet told me it does not remove the urine smell and that animals will still be attracted and potty on the carpet as long as I use a regular shampoo.
Urine is the body’s liquid waste. It is made by the kidneys, which filters toxins out of the blood. It contains water, salt, urea, and uric acid. Urea is expelled in the form of sweat through the body, while uric acid is the result of urine metabolism.
Look, we all know that dog urine can be problematic. Even in the best of cases, when it’s noticed instantly, it has a tendency to seep into carpeting and sometimes under flooring. This leads to lasting odors in many cases, even where you’ve handled the stains super efficiently.
As dog owners, we’ve all been there. You got delayed at the office or running errands, and your dog couldn’t hold it any longer. Of course, he picked the perfect place on the carpet to pee. Even worse, your pet has chosen a regular spot to relieve himself in your home because you haven’t been able to completely eliminate the smell.
No matter how well-trained your furry pal is, accidents happen. You need to know how to clean dog urine from carpet. If at all possible, clean up urine as soon as it hits the floor and while it’s still wet. Once it dries, the odor will set into the carpet fibers. Place a towel or a couple of layers of paper towels on the spot to absorb the urine. Stand on the towel so it pushes into the carpet and absorbs as much urine as possible. Next, mix up a solution of 2 cups of vinegar, 2 cups of warm water and 4 tablespoons of baking soda. Put solution into a spray bottle and spritz on soiled area. Let sit for 5 to 10 minutes. Blot with a soft cloth.  For heavier stains, sprinkle baking soda directly on the stain. Pour a 50/50 mixture of vinegar and water on the area and let it sit for 5 minutes and blot up with a cloth.
How to get dog urine smell out of carpet from my experience. We have Resolve for pet stains and odors. We were with our dog when she had her accident inside so we were able to act fast. We blotted the area with a rag to try and pick up as much urine as possible, then sprayed the area and let it set in for a while. Then scrubbed really well and we haven’t noticed a smell or any stain.
If your home has pet odor problems, you’re in for one of the toughest odor removal projects known to man. That doesn’t mean you should give up hope. It just means that depending on the nature of the odor, and the material, this isn’t going to be an easy task.