We all love our furry friends, but their pee can cause damage in the grass. Dog pee contains a high concentrate of ammonia and nitrogen. If your dog pees in the same spot repeatedly, over time the grass will begin to thin out and eventually die. We often see this damage off the edge of patios, along fences, or near front doors. The best way to avoid damage is to dilute the pee as soon as the deed is done. Hope this helps!!