You can easily plant grass seed to fix dog urine lawn injury to get a better-looking grass. The Grass Stitcher will counteract pet pee and prepare the area for planting grass seed simultaneously. Pet urine on your lawn is much like spilling fertilizer on your lawn. The strong ammonium burns the lawn similar to the way fertilizer will. Often you will see green grass around the dead area, which is the less concentrated ammonium acting like fertilizer. The Grass Stitcher will disolve the ammonium and produce perforations that are perfect for lawn seed germination.