With one easy and pet safe item, you can get rid of dead brown dry spots on grass caused by pet urine.
Beer! Use a regular beer, not a light beer, malt liquor or a wine cooler.
Beer has lots of fermented sugars and nutrients. A dead patch will absorb the sugars and nutrients thus helping the soil below. The beer acts as a fertilizer and provides nutrients to new grass growth. The beer will strengthen the grass and neutralize the nitrogen in pet urine. Beer eliminates fungi, as well.
Use 8 ounces for about a 10 inch spot. Pour beer directly on dry spot, Give it a week. Check spot a week later for growth. Add more beer, if needed. Continue until area is healed.