How to Clean Dog Urine from Concrete Patio in 5 Easy Steps

how to clean dog urine from a concrete patio

Urine stains or an unpleasant dog urine odor can ruin your enjoyment of a concrete patio.

Unfortunately, dogs aren’t picky about where they urinate, and a patio is frequently a convenient spot for them to do so. Urine leaves a strong stain on concrete and seeps into it leaving a bad odor that you probably want to eliminate.

If you want to clean dog urine from concrete patio you should do the following:

  • Mix a household cleaner in hot water to clean the urine stain
  • Pour the mixture on the floor
  • Pour hot water over the treated area
  • Prepare an enzymatic solution
  • Pour the enzymatic solution onto the stain
  • (Optional) Seal the concrete

In this article, we will show you step by step how you can clean dog urine from a concrete patio.

Can I use my usual household cleaning products?

As you may have discovered, conventional cleaning methods are unsuccessful in the long run at removing urine stains from concrete, and they can even make urine odors worse by “setting” the urine into the concrete.

You may assume the urine smell has gone after using household cleaning solutions, especially during dry weather. Still, when moisture gets into your concrete patio, the stink can return, sometimes stronger than before. When uric acid comes into touch with moisture, it produces a gas, which provides the odor.

Concrete absorbs urine liquid because it is porous. The uric acid crystals in the urine adhere to the concrete when it dries. They remain adhered to the concrete because they are insoluble. Regular soaps and cleaning chemicals that do not break down uric acid crystals will not adhere to them.

How to spot the urine?

Dog pee might be simple to spot at times, especially if it’s fresh. Other times, it can be challenging to distinguish. This is especially true for those who have recently moved into a property where the previous owner had pets. The stains were probably cleaned before the new residents came in, momentarily masking the odor.

Use a UV light or black light to pinpoint the specific position of pee spots and the source of the foul odor. This equipment does an incredible job of detecting even the tiniest dog urine stain on your concrete.

A UV lamp that pinpoints the stain’s specific location

Specialized equipment that employs a spotlight to reveal pee spots on concrete is known as ultraviolet light. This gadget emits ultraviolet light, which causes any urine stain, old or fresh, to shine in the light. So, even after several washes, this gadget can still detect an old stain, which is quite helpful.

Make sure the spot where the dog’s urine is or the space around it is dark, depending on where the dog’s urine is. Turn on the black light after that. Remove it from the concrete no more than three feet. Scanning the floor for possible detection in portions is a good idea.

Dogs can urinate on the wall in some circumstances, so make sure to check the first two feet of the walls from the floor. Urine stains on concrete will appear blue, green, or yellow when exposed to ultraviolet light.

If you cannot use the black light for some reason, there is an alternative that will take longer. You can use your nose to detect the stain if you aren’t afraid of immediately smelling the unpleasant dog urine stench.

Allow some fresh air to enter the area, then get down on your knees and hands to begin sniffing. You will be able to identify the smell within a few minutes, depending on the size of the area. After that, make a note of the location.

Still, if the smell of dog urine is too much for you, use a black light.

Why is urine so harmful to concrete?

Concrete, as you may know, is dry and as hard as a rock. Concrete is a relatively porous substance, which is one of its essential features.

This means that water and other liquids will saturate and seep into bare (unsealed) concrete.

Usually, this isn’t a problem, but it’s not when it comes to pet urine.

Urea from dog or cat urine penetrates concrete, cracks, and emits foul odors.

Dog or cat urine tends to soak into concrete surfaces and work its way down. Anyone who has had cats or dogs knows how tough it is to remove an animal pee stain from your garage floor, basement flooring, patio, and under carpet pads.

Worse, this strong substance can sit dormant inside concrete for years, only to rehydrate and reactivate the odor when moisture is introduced.

The vapors will get into anyone’s nose that is in the vicinity. Yuck!

This is most certainly the issue you’re dealing with, but don’t worry; there’s a natural and scientific solution to eliminate the source of the odor.

How to clean dog urine from concrete

First and foremost, whether you suspect a dog stain in the basement, garage, or patio, you must prepare the area for treatment. There could be debris or dirt on the floor. Scrape it off with a scraper, or rake it off with a rake. This will ensure that the concrete is clean and that any dirt or debris will not interfere with the cleaning chemical applied later.

What do you need to get rid of dog urine smell in concrete?

To complete this task, you’ll need the following items.

  • UV flashlight or backlight 
  • TSP, Vinegar wash, Hydrogen Peroxide 
  • Enzymatic cleaner 
  • A scrubber. 

After you’ve scraped away all of the debris, grime, and anything else that can complicate the cleaning procedure, the following step is to locate the obstinate stain on your concrete. This is where a UV lamp or backlight comes in handy.

This gadget comes in handy, especially if you’ve had to clean a lot of stains. When the lights are turned off, hold the UV light three feet away from the floor. Mark the area with chalk after the stain emerges yellow, blue, or green. If UV light doesn’t seem to be working, try sniffing the area.

When you’re finished, you’re ready to go on to the next phase.

Step 1. Mix a household cleaner in hot water to clean the pet urine stain

TSP or another heavy-duty cleaner will ensure that the dog urine patch is clean and ready for the enzymatic cleanser to begin its work. Wear rubber gloves while using this product because TSP can cause skin irritation. If at all feasible, wear glasses.

In a gallon of boiling water, dissolve  ½ cup of TSP. Alternatively, vinegar can be used for TSP. Mix two cups of vinegar with a gallon of water for a vinegar wash. If you prefer, combine two cups of hydrogen peroxide with two teaspoons of baking soda and two drops of dish soap. After that, apply it to the affected area. The ratio of TSP, vinegar wash, and Hydrogen Peroxide to water should be ½ – 2 to 1.

Step 2. Pour the Mixture on the Floor

The next step is to softly clean the floor with the TSP mixture using a scrub brush. You can do this with a deck brush. Allowing the mixture to dry out too rapidly is not a good idea. Allow for at least 10 minutes to allow it to soak into the concrete in the same way that the urine did.

While pre-treating, you may notice some odor leaking from the concrete. This should come as no surprise. The uric acid reacts with the water and produces gas as a result of the interaction.

Pour Hot Water Over the Treated Area

When you’ve finished scrubbing, and the solution has had enough time to permeate through, get some hot water and pour it over the treated area. The water should be vacuumed up. You can do this with a carpet cleaner. This will soak up any urine residue in the concrete and remove the TSP solution. Make sure the water is vacuumed up at least twice. Allow it to dry for a day or overnight.

Step 3. Prepare an enzymatic solution

Enzymatic cleaners operate by digesting stains with microbes. These bacteria create enzymes that break down uric acid molecules into small bits to be digested and broken down into carbon dioxide and water.

Some enzymatic cleaners can be used with a carpet cleaning solution. In contrast, others require a significant amount of water, while others do not. Because you’re working with concrete, you must utilize a concentrated gallon product.

This indicates you should use a high-concentration enzymatic cleanser. The reason for this is because most enzymatic products rely on air exchange. Because the uric acid molecules are so deep in the concrete, it will take longer for the air to penetrate within.

The most important thing to remember is to follow the instructions on the enzymatic product you’re buying.

Step 4. Pour the enzymatic solution onto the stain

After cleaning, use an enzymatic cleaner to disinfect your patio. The uric acid crystals are broken down by ‘good’ microorganisms that generate enzymes. The bacteria break down the smaller pieces of crystals into carbon dioxide and water due to digestion.

Check the enzymatic product’s mixing directions carefully before pouring some of the cleaners onto a tiny area of your concrete (about three square feet). Scrub the product into the concrete with a deck brush and let it for at least 10 minutes to allow the concrete to absorb the solution. In extremely stained or smelly places, you may need to repeat the process.

If you want to be sure you don’t miss any pee spots, repeat the technique on any other portions of the concrete or all of it. Cover the regions or the entire patio with tarpaulin to prevent evaporation and allow the solution to enter the concrete. Allow drying for at least one night – preferably longer. The solution does not need to be rinsed. Pets and children should be kept out of the area.

It’s critical to leave it for at least one night to give it time to work. It won’t work if you leave it on for a couple of hours. Even if the pet pee got into the concrete a long time ago, this type of cleaner should get rid of any lingering odors.

Step 5. Seal the concrete for future easy cleaning (Optional)

Sealing the concrete patio is an excellent idea, even though it is an optional step. Applying a protective layer on top will prevent subsequent pee spills from entering the concrete. This also extends the life of your concrete patio and can even improve its beauty.

Allow the concrete to dry completely after washing and rinsing it. The sealer will not adhere to the concrete correctly if the surface is not completely dry. If necessary, fill in any cracks in the concrete. Then, following the manufacturer’s recommendations, apply the sealer while wearing gloves and a face mask.

To prevent the sealer from coming into contact with your skin, wear long-sleeved trousers and shirts. Depending on the type of sealer, you’ll use a roller or a sprayer to apply it. Oil-based sealers are often sprayed on, while water-based sealers are typically applied with a roller.

Applying the sealer in parts is perhaps the most efficient method. Use two or more applications of sealer, allowing each to dry before applying the next. You’ll need to wait three or four days before you can use the patio again.

Depending on the style you want, there are a variety of sealers to pick from, each with its own set of effects and colors. Wash the concrete from time to time to get the most out of the sealant. You could reapply the sealer after washing if any parts have worn down. The concrete may be cleaned with soap and water. The sealer isn’t going to last forever, so it is recommended that you reapply it every few years.

Can I stop my dog urinating on the concrete?

You’ll probably want your pet to avoid peeing on your concrete patio even if you’ve followed the measures indicated above. If dogs smell their urine, they will return to it to do it again.

If at all possible, make the patio area off-limits or undesirable to your dog. You can use temporary fencing to close it off. Alternatively, if your dog approaches the patio from your yard, motion detection lights will turn on before he gets there. If he’s in the house, you’ll need to restrict his access to the patio.

Look around your yard for places where your dog pees and choose one to concentrate on. If he doesn’t have any specific venues in mind, choose one that seems suitable. It should have enough area for him to do his business — a larger dog would want more space than a little dog.

Choose a spot where you think your dog will be comfortable. Ensure the area is clean; your dog will not want to relieve himself in a filthy or full-of-his-waste environment, so clean up after him. You’ll need to be patient and keep an eye on your dog while he’s being trained. It may take up to six weeks for the training to show results.

On the leash, lead your pet to the right pee spot whenever he needs to go. Most dogs offer signals such as spinning, pacing, or sniffing when they need to relieve themselves. Recognize the red flags.

To put him at ease, speak to him in a friendly manner and stay at the location until he completes his duty. Allow him some privacy and refrain from gazing at him because he may be agitated.

Once he has peed, give him a treat and praise him. Give him a treat only if he pees in the correct area, so he associates peeing with a reward. It’s also a good idea to take him for a stroll after he’s peed in the proper location, so he remembers what happened. He’ll be more likely to recall that this is the appropriate area if he feels good after peeing there.

You might also wipe some of his previous urine on the chosen spot so that your dog recognizes it as the correct place to pee.

Final Thoughts

If your dog pees in the wrong spot, even if it’s on the patio, don’t smack or reprimand him. It will be unproductive since he will not comprehend. It’s also possible that it’ll make your dog fearful of you. Clean up the mess and get on with your life. Your dog will quickly learn that going in the proper spot results in food, a stroll, or something else enjoyable and will be more inclined to pee in the appropriate place.

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Emma Olsen
I’m a gardener and blogger with over 20 years of expertise writing about and cultivating fruits, vegetables, herbs, and flowers. I have extensive experience in organic and sustainable gardening, perennials, annuals, and sustainable and urban farming. I’m a nature freak and I enjoy bird watching and swimming with sea creatures.