Dog Rocks?

[oldandcrabby]

My lawn is a patchwork of green with brown patches. Do Dog Rocks work, has anyone tried them? Advice please?

I can't vouch for it because I haven't tried it yet, but I read the following just recently. (from the dog listener website)
A dose of one teaspoon to one tablespoon of apple cider vinegar (depending on the size of the dog) per day will nullify the Nitrogen imbalance and should solve the problem. The apple cider vinegar can be added to the dog's water or put directly on his food. The natural type from a health food store, not the pasteurised version from the supermarket. I find the apple cider vinegar from horse tack shops are the best. Two tablespoons of tomato juice on the dog's food twice a day will have the same effect.

I would run away very fast and very far from any advice from a dog listener website.

We have dog rocks. We've had them for a year. My lawn is still crap, and sometimes the dogs bring me the rocks and drop them in my tea. I think it's revenge.

Dog rocks don't work for us I'm afraid I will try the apple cider vinegar though