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Home > Horses > How to Neutralize Horse Urine (6 Ideas & Tips)

How to Neutralize Horse Urine (6 Ideas & Tips)

egyptian arabian horse

The smell of a barn, with the sawdust, fresh hay, and horses, smells like home — until it doesn’t. We’re not talking about the smell of dirty stalls; while that’s not the most pleasant aroma, it can be easily removed with a little time and effort spent mucking out the barn. We’re talking about the leftover smell of horse urine and ammonia. In some instances, the smell can even stick around long after you’ve cleaned out the stalls. If you’re a horse owner, it’s safe to say that you know the smell that we’re talking about!

Ammonia is more than just an unpleasant odor. Long-term exposure to ammonia can have serious health consequences for you and your horses, making clean-up a critical part of barn management. To help you neutralize the smell (and the ammonia), here are six ways to clean it up.


The 6 Tips to Neutralize Horse Urine

1. Muck Out Your Stalls Regularly

This should go without saying, but if your stalls are dirty, they’re going to smell. Ideally, horse stalls should be mucked out twice a day if horses are kept in them full time. Make sure to remove any wet or soiled shavings and all manure and urine piles. If horses are turned out for most of the day, you can reduce your chore time to a once-per-day clean-up schedule.

American Quarter horse
Image Credit: Bernell MacDonald, Pixabay

2. Make Sure Your Barn Has Adequate Ventilation

Horse stalls should have time to both dry out and air out without a horse inside them. You can do this by opening doors and windows while your horse is outside. Adding ceiling and aisle fans will help with cross-ventilation and increasing airflow.

3. Design Your Stalls for Optimal Drainage

Do your best to ensure that urine doesn’t pool or seep inside your stalls. Stall mats that have gaps in them offer perfect places for urine to drain into and hide, even if you’re cleaning them regularly. Seamless stall mats are ideal to avoid this, as are concrete floors inside barns. Wood and dirt absorb urine as it hits the floor, making it more likely that your floor will retain smells.

Adding more absorbent bedding like shavings instead of straw will help urine from hitting the floor in the first place and make it easy to clean up.

caspian horse
Image Credit: KUSHEI, Shutterstock

4. Dial-in Equine Nutrition

The ammonia in horse urine is a by-product of protein. Feeding your horse the correct amount of protein is important, but don’t assume that more protein is better. High levels of protein will result in high levels of ammonia production. Consult with your veterinarian or an equine nutritionist if you are unsure about your horse’s dietary needs.

5. Increase Your Horse’s Turnout Time

There are numerous reasons that horses should spend a ton of time outdoors. Fresh air, exercise, and socialization are the most obvious ones. Permanently housing horses outdoors with adequate shelter or at least for several hours each day is the easiest and best management practice to avoid barn smells.

Appaloosa horse eating grass
Image Credit By: rauschenberger, Pixabay

6. 6. White Vinegar and Baking Soda

If all else fails, scrub down your barn floor and stall mats with vinegar and follow up with a sprinkling of baking soda.

Vinegar is a fantastic odor neutralizer, and it is non-toxic for your animals. Before you put shavings down in your stalls, spray your mats with vinegar and add a sprinkling of baking soda. This will help stop ammonia odors before they start.divider-horse

What Is Ammonia?

When a horse is fed excessive amounts of protein, their body expels the extra in the form of urea through feces or urine. Natural bacteria feed on urea, resulting in the production of ammonia gas.

While you can’t see ammonia, you can certainly smell it. In high amounts, ammonia gas causes burning sensations in the eyes, nose, and throat. It is known to make people noxious and dizzy, induce vomiting, and increase mucus and fluid production in the lungs.

Ammonia exposure isn’t something to be taken lightly. It is classified as a highly noxious gas, and it is hazardous for both human and equine health.

How Does Ammonia Affect Horses?

If your eyes are watering while you’re mucking out your horse’s stall, you can bet that ammonia gas has already affected your horse. It can cause damage to horses’ airways and the lining of their respiratory tract. In some cases, it can be a contributing and aggravating factor in equine asthma and inflammatory airway disease.

Although the long-term, total effects of ammonia exposure aren’t known, research has indicated a link to negative effects on metabolic and reproductive hormones. We know for sure that exposure to high levels of ammonia negatively affects performance by impacting the immune and respiratory systems. divider-horse


Neutralizing horse urine inside your barn is a critical component of barn management. It’s not only the culprit of unpleasant aromas, but high levels of ammonia exposure can also be hazardous to your health and your horse’s health. Luckily, there are a few things that you can do to keep your stalls and your barn clean and prevent overexposure to this noxious gas. Follow the tips in this article as part of your barn management to keep horse urine ammonia smells at bay.

Featured Image Credit: Trevor G Johnson, Shutterstock

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