I have to bid on a lawn and a parking lot. The parking lot is approximately 250,000 square feet. Prior LCO left the lawn and the parking lot very neglected. There is grass coming through cracks all over the parking lot. Some areas as much 200 square feet are pretty much covered. I was wondering if there is a way to kill off the grass properly. I don't have a pesticide license. If there is an organic way great, if not, what are my options. I have a pesticide and fertilizer company that I call for spraying the lawns i manage. I contacted them and other licensed companies and all they have are hand sprayers for vegetation killer. Take days that way. I was wondering if there was a granular form of vegetation killer as I have a spreader that I mount on the rear of the truck for salt/sand in the winter. Thanks for any responses you can give me.