A few years ago. We had no problems with are yard. The grass was beautiful. We always used Scotts products. The last few years most of are grass has died out. Weeds and Grass will not grow but nimblewell grass will. We know how to do lawn maintenance. Are yard has always been shaded. Some sun does get on the yard but not much. We need to send in a soil to have it tested. I read most just recommend a fertilizer to use. That not want we want. We want to know what destroying are yard. We also tried a lawn maintenance company. That did not help either. I do not blame them either. There some type of disease that we might have or possibly something foreign in are soil. In the 1960 we had a Gas Station Next door. I was wandering if the tank may have started leaking and causing sporadic damage or if some fuel got in the rain sewers. Any recommendations? Thank You.