No, he's not kidding. However, it's not quite as bad as you think. If the yard is relatively large and the dog goes all over the yard you should be allright. It takes a fairly high concentration to kill bermuda as it will accept alot of urea. Usually the spots will darken/green up in a small circle and the very center will turn brown. I have alot of yards with dogs and do not really have an issue although none of them are as large as yours.