Water the spots where your dog or other animal urinates with water from your garden hose. This helps to cure the lawn burn and keep future urine stains from appearing in the grass.
Reseed areas of your grass with stubborn urine stains. Use types of grass that are more resistant to urine, such as fescues and perennial ryegrasses.
Fertilize your lawn less. Fertilizer, like dog urine, contains nitrogen. Too much nitrogen in the grass is what causes the lawn burn. Switch to a low or no-nitrogen fertilizer if needed.
Feed your dog a healthy diet with dog food that does not contain poor sources of protein, such as meat byproducts. Too much protein in your dog's diet or less digestible protein sources can cause lawn burn.
Give your dog access to fresh, clean water all the time. The more water your dog drinks, the more diluted urine becomes and the less likely urine stains in grass will be.
Choose one spot in your yard where your dog is allowed to urinate. Encourage with positive reinforcement. That way, only one spot will suffer from urine stains.