100% natural, proven & hassle free prevention & cure to canine lawn urine burn patches, no medication required & safe for all household pets Placed in a dog’s water bowl with no change to the pH balance of the dog’s urine, Dog Rocks will help prevent new urine burn patches ruining your lawns. Dog Rocks have been selling in Australasia since the late 1990s when their beneficial properties were discovered, tried, tested & then sold with great success. Dog Rocks are now available worldwide online & in store across the vet, pet, garden centre & giftware markets.