I have a customer with the absolute worst grass I have ever mowed. It looks wonderful and is comletely free of weeds and crabgrass, but when i go to mow it with the zero turn, it completely falls apart. I've mowed week-old sod on a slope with more staying power than this stuff. It tears so easily, it's like there aren't any roots, even when I use a push mower, my feet rip it. Is there a miracle product out there to give this grass a stonger root system?