The use of gypsum or dolomite/ lime has been advocated but it is uncertain exactly what mechanism this would have in helping prevent urine damage. Improved soil quality over time may result in better drainage and less urine concentration at the grass and root level, but additional information is needed in this area. Gypsum doesn't change the PH level in soil only the calcium and sulphur levels, the urine is high in Nitrogen & salt which raises PH burning grass
Watering the spot after urinations will accomplish the dilution with no ill affects on the dog. Dr. Allard’s study looked at watering fescue at different intervals following urination. Water volumes three times that of the urine were used to assess their dilution effects. A fertilizer effect rather than burn was noted when the site was watered at any time up to 8 hours after the urination. When the delay in watering was extended to 12 or more hours, progressively worse burns were noted. It appears that routine watering of the grass in early mornings would not be sufficient to prevent all urine burns. ANOTHER WAY----This product is what professional dog scooping businesses use on the urine spots in yards, Dogonit Lawn Repair Treatment, contain organic enzymes with soil cleansers to flush the salts from the root zone. The manufacturer states on their website, “Dogonit works by loosening compacted soils, allowing air, water, and nutrients to penetrate, stimulating deeper root growth. The build-up of salts from fertilizers, herbicides, and urine overwhelm lawn areas and cause dehydration (burn spots), which appear as localized, yellow or brown patches.
Spray product on affected areas and flush with water. Spray treats up to 200 spots;
Concentrate makes one gallon, enough solution to treat 800 spots. Ingredients: Deionized Water, Plant Saponins, Organic Plant Acids, Plant Enzymes.”
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https://www.odordude.com/how-to-get-rid-of-dog-urine-smell-in-yard/
Hose it down as soon as you can. 6 dogs in my yard. I run the sprinklers for a couple of minutes.
The rain should take care of it. If not use a hose to dilute.
This article may help https://homeguides.sfgate.com/homemade-formula-spray-lawn-rid-urine-smell-100557.html
Dilute it with water
Dilute with water or wait for rain.
Use gypsum.
Need to change the dogs diet to prevent continual problem if the dog is yours. Keep plenty of water clean and available at all times minimum.
Watering the spot after urinations will accomplish the dilution with no ill affects on the dog. Dr. Allard’s study looked at watering fescue at different intervals following urination. Water volumes three times that of the urine were used to assess their dilution effects. A fertilizer effect rather than burn was noted when the site was watered at any time up to 8 hours after the urination. When the delay in watering was extended to 12 or more hours, progressively worse burns were noted. It appears that routine watering of the grass in early mornings would not be sufficient to prevent all urine burns. ANOTHER WAY----This product is what professional dog scooping businesses use on the urine spots in yards, Dogonit Lawn Repair Treatment, contain organic enzymes with soil cleansers to flush the salts from the root zone. The manufacturer states on their website, “Dogonit works by loosening compacted soils, allowing air, water, and nutrients to penetrate, stimulating deeper root growth. The build-up of salts from fertilizers, herbicides, and urine overwhelm lawn areas and cause dehydration (burn spots), which appear as localized, yellow or brown patches.
Spray product on affected areas and flush with water. Spray treats up to 200 spots;
Concentrate makes one gallon, enough solution to treat 800 spots. Ingredients: Deionized Water, Plant Saponins, Organic Plant Acids, Plant Enzymes.”
Resources
good info. on this https://www.humicgreen.com/dog-urine-and-soil-ph/