Pet urine and its effects on grass have been among the most problematic issues that homeowners in America have to deal with and left wondering how to bring back dead grass from dog urine. In many cases, pet urine tends to cause unsightly spots of yellow or brown dead grass that can ruin the appearance and the health of a large part of your lawn. Dealing with pet urine can be difficult, whether you aim to prevent it from becoming an issue, or you want to fix your lawn after the fact.
The main reason that pet urine is a problem in the first place has to do with chemistry. Dog urine damages grass because of its chemical composition, and there is no way around that. The only path to fix it is to either guide your pets to pee away from your lawn, or to remove the dead grass and replace it.
Nitrogen is the main culprit, since in high concentrations, it can cause grass to become yellowish and eventually die. Various salts and other compounds can also work to alter the chemical composition of the soil and especially impact its pH. If the soil is too alkaline or too acidic, then it can make it difficult for grass to grow and thrive, and eventually the unbalanced pH will lead to patches of grass dying out entirely.