Problem: Dog Urine Injury
Dog urine burns grass. The salts in the urine cause varying stages of damage, from slight discoloration to outright death. The nitrogen in the urine may encourage immediately surrounding grass to grow rapidly, resulting in a dark green, vigorously growing ring. Lawns suffer more damage in hot, dry weather than at other times of the year.
Water affected areas thoroughly to dilute the urine. Grass watered within an hour or so after urination should be OK, but grass that dies will not come back. Eventually rainfall or irrigation will wash urine from the soil and surrounding grass will fill in affected areas. For quick repair, seed or sod damaged spots. If possible, keep dogs off the lawn or follow them with a watering can. Lawns that are well-fed and kept moist are less susceptible to damage.