Ok, sorry for the very random title but I can't think of a better way of wording it. I'm looking for information on where to get the stones, crystals or powders you put in female dogs water bowls which make their wee non-acidic. My two girls are steadily killing off the grass in my garden and I'm fed up if it. I've checked with the vet and she's said there's no problem with using the stones but she couldn't tell me where to get them from. Can anyone help please?
I've not Googled as I have no idea what I'm searching for!