Top positive review
They work-But you need to use a container
Reviewed in the United States on July 21, 2021
Well, we have tried probably 4 different, highly rated options to battle the killing of the grass. Finally a product that works! My tips which I build off of others that shared in reviews: buy 2 gallon sized containers. Put the rocks in the containers with water (not the dog’s dish). Get enough rocks to measure correctly (very important) and keep both containers filled and rotating. As you fill the dogs dish up, refill that container, but then use the container that had been sitting for a bit next. That way you are using water that has been ‘treated’ for enough time each time you pour water into the dish.
I believe this is why these don’t work for some people. They put the rocks in the dish, put new water on top of them, not giving it any time to sit with the rocks.
And I have a cat that occasionally will drink from the dog’s dish-no issue.