When dogs urinate and leave burn patches on your lawn, it can be annoying. But we love our best friend so to help this problem, you can purchase Dog Rocks from Greener Lawn. Dog Rocks are made from naturally occurring paramagnetic igneous rock which when placed in water will filter out impurities found in tap water. Place the rocks in your dogs water bowl and rather than replace the water just top it up. You should notice a change in your lawns appearance within 5 weeks.