I have just found a really interesting product which may solve the problem of dead patches on my grass from all the dog pee.  The first pee of the day is usually the strongest so I am going to buy a few of these pee posts and put them around the garden where I want the dogs to pee.  I will give you my opinion after the next dog board.

http://www.wearepets.co.uk/dogs/dog-products/dog-training/simple-solutions-pee-post

Has anyone else tried this?