K9-Turf is an organic based pet friendly fertilizer that will repair & prevent burn spots caused by dog urine. The fertilizer works by reconditioning your lawns' soil with millions of microbes and enzymes that decrease the concentrated nitrogen content balancing the PH levels in the soil. The nitrogen in dog urine (Urea) can be beneficial to grass but the high concentration in your dogs urine is too high and burns the root system completely killing the grass in those spots. The microbes and enzymes in K9-Turf Fertilizer will break down the high nitrogen content keeping the soil PH levels balanced, stopping burn spots from occurring. Using K9-Turf Fertilizer will recondition your soil building a healthier stronger root system that will produce a thicker more lush lawn, there is no need to use any other fertilizer when using K9-Turf. | K9-Turf Lawn Fertilizer for Pet Owners | Size 30 lbs