In the past I've tried tomato sauce, Green um and hosing down the grass after I've seen my dog squat, all with varying degrees of success.
However, this time I'm placing my hope in Dog Rocks, which seem to have a good rate of success. These rocks are simply placed in your dog's water bowl (s) and decrease the nitrate level in your dog's urine, which supposedly stops the lawn being killed off.
Has anyone else used them?
I will report back in a month or so and let you know how it's worked for us.