Excellent solution to lawn brown patches. Sometimes we get large rocks, fella's only little, but easy to break up with screwdriver and hammer. Cat shares the water with him and both love it. Wouldn't be without it.
I bought the 600g bag thinking it would be more cost efficient. Turns out there was only 3 rocks in the bag 3 times the size of the rocks in the smaller bags. They would weigh 200 g each and the recommended amount on the packet is 100g per litre of water. I won't be purchasing again s they can't be bothered to break them down to the proper size.
I was sceptical when I first tried these but it certainly works and is much easier than trying to get the dogs to wee in a particular place.
Sceptically I bought a pack. Now on second pack. Still have spots but soooo much better!
It's still early days but this product looks to be working! Our rock came as one large one so haven't had to worry too much about our puppy taking it out of the water and swallowing it but I like the idea of keeping it in a separate container and pouring off the 'treated' water daily. It's all natural - which you gotta love!