These Dog Rocks are a fantastic solution those yellow patches appearing on your lawn wherever your dog wees. Dog Rocks are a 100% natural stone  and when placed in water, the stones essentially magnetise the water, drawing out impurities such as tin, ammonia and nitrates, which are known to cause that nasty yellow lawn burn.  

By putting one of these rocks in your dogs water dish, youll be reducing the levels of these impurities, which can clean up your dogs urine and prevent it from burning the grass.