I purchased my house three years ago and have had problems with the yard ever since. It is situated on a slope in a shaded area. It is also well frequented by my three large dogs. The dog litter on the yard does not seem to affect the grass. It started out as zoisia and now is dirt and rock. I am thinking that I need something very hearty and also can handle a lot of moisture since it is on a hill. any suggestions would be appreciated. Phil