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How To Prevent Urine From Killing Grass | Mowbot

Posted by mowbot team on Feb 22, 2018 15:26:39 PM

Have you noticed that one patch of grass in your yard is persistently yellow and dead? Do you have a dog with a favorite place to pee? You’ve found your culprit. We all love our pets, but no one wants patches of dead grass in their yard. Why does dog urine kill grass? The simple answer is nitrates.
If you fertilize your lawn, it already has elevated levels of nitrates, so adding even a little more can kill your grass. Dog urine contains a variety of nitrogen compounds that kill grass. Unsightly yellow spots can be frustrating and near impossible to remove without rectifying the source, i.e., dog urine.


Knowing how to prevent urine from killing grass can save your lawn from unattractive discoloring. If your dog is your problem, you need to either solve the grass attraction situation, or the nitrate situation. Grass attraction is merely the problem in which your dog is attracted to one specific patch of grass, turning it yellow. If your dog chooses a new spot every time, your yellow pieces may be from something else.
Grass attraction is best fixed by changing where the dog urinates. Either find a hidden grassy area or a non-grassy spot of the yard where your dog can comfortably pee without adverse lawn side effects.Screen Shot 2018-10-28 at 9.19.09 PMIf you have a better area for the dog to pee, accompany them outside and try to direct them to the new spot. Use a pee post like the Simple Solution Pee Post ($11.37 on Amazon Prime). Pee posts emit dog attraction pheromones, encouraging them to urinate on or near it. To deter them away from the old spot, use a citrus spray.

Pee posts and citrus sprays need constant upkeep and watching over when your pet is outside, so if your time is limited, consider using an indoor restroom for pets like the PETMAKER Indoor Restroom for Pets ($30.09 on Amazon Prime).
If changing where they urinate isn’t working, or is too time-consuming, you can tackle the nitrate problem head-on. Dog Rocks ($9.05 on Amazon Prime) are placed inside the water bowl and remove nitrates from the water. You also want to encourage water drinking as much as you can. Provide constant and adequate water for your dog. The more they drink, the more dilute the nitrates in their urine are.


Even after you successfully divert your dog from the yellow spot, or remove the nitrates from their urine, your lawn may stay yellow for some time. Dog urine can have a long-term effect on your yard, but there are some simple steps to fix the dead grass.

  • Replant the area with urine-resistant grass. Kentucky Bluegrass and Bermuda are the most sensitive to urine, while Ryegrass and Fescue are the best for dog urine.
  • Use a lawn repair treatment. Dog urine lawn treatments use organic enzymes and soil cleansers to flush the salts out.
  • Fertilize and water. The right fertilizer can help return green coloring to your yellow spots and proper watering and irrigation revitalize the area.


If your lawn care and yellow spots have gotten the best of you, or your current lawn care company isn’t making the cut, consider switching to a service like Mowbot. While using a robotic mower is cutting edge, Mowbot is much more than a mowing company. Mowbot offers a full array of lawn care services in an environmentally responsible way. From using battery-powered equipment and cars to using lawn and family-friendly fertilizers, Mowbot delivers the perfect alternative to lawn care for the environmentally-conscious home or business owner. Your Robot Wrangler is well equipped in handling yellow patches and will renew your lawn in no time.

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