We were skeptical until we tried them. An all-natural solution to the problem of pet urine burn marks on lawns and in back yards, Dog Rocks are hassle free and easy to use. Simply place the rocks in your dog's water bowl, and the problem fades away. Nothing leeches into your pet's water-the rocks purify the water, removing harmful trace elements, and thereby lowering the amount of nitrates that are expelled in the dog's urine. Thoroughly tested in the gardens of Europe and Australia, more than one million packs of Dog Rocks have already been sold worldwide. Each bag provides approximately 3 months of lawn protection. Australia.
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"I started using the dog rocks in the spring. I was skeptical even though the lawn looked great. After using them for a few months we had a dog visit who had not been using dog rocks, instant stains appeared from the visiting dog. This proved to me the rocks were working for our two dogs"