Hi Howard,
Urine “burn” on lawn is not a urine pH problem… it is a urine nitrogen problem! It is no different than if you “spilled” fertilizer on the lawn. Lawns that already have a high nitrogen load via frequent owner fertilization are at a higher risk than a poorly fertilized lawn.
Teach your dog to eliminate in one location, or water the area well after your pet eliminates or if you fertilize you could try to decrease the overall fertilization schedule. Because I don’t fertilize often the lawn grows lush and green wherever my dog urinates!
http://www.ext.colostate.edu/mg/gardennotes/553.html
