Unique and proven; 1 Million + Rocks sold worldwide since early 2000"s * 100-percent natural * Hassle free; easy to use and safe for all household pets * No change to the pH balance of the dog"s urine * Does not affect the pH balance of your dog"s urine * Only 100-Percent natural prevention and cure on the market * Safe for all household pets * Saves your lawn and shrubs from dog and bitch urine burn marks