100-Percent NATURAL and it's the only 100-percent natural prevention and cure on the market;Does not affect the pH balance of your dog's urine;Saves your lawn and shrubs from dog urine burn marks;Safe for all household pets and easy to use;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