If you have dogs, you understand the challenges of keeping your lawn lush and green. Lawn burn is a common issue for many dog owners, and occurs when your dog’s urine damages the lawn due to an alkaline pH, concentrated urine, and nitrogen load.Urine pH and Nitrogen Load Ideally, dogs should have a slightly acidic urine pH of between 6 and 6.5. If your dog’s urine pH is above 7, the higher pH will burn your lawn and could lead to struvite stones, bladder stones caused by alkaline urine. To check your pet’s urine pH at home, you can purchase pH strips and collect a urine sample from your dog in the morning. A dog’s urine pH can be reduced with a low-carb, grain-free diet.Dogs on a very high protein diet can also produce urine that causes lawn burn. When protein is broken down, nitrogen is excreted. Higher amounts of protein lead to increased nitrogen, and a greater chance of lawn burn. If your lawn is heavily fertilized, it may be receiving near maximum levels of nitrogen already, and the additional amount of nitrogen in your dog’s urine could damage the grass.