Lately we're seeing it on most lawns --much much more than normal years. I realize a "preventative" fungicide is recommeded, but now it's too late???....it's really bad this spring. (Kentucky bluegrass growing in partially shaded areas). Heck, we're seeing it on bluegrass that receives over six hours of sunlight. The cultivator 'Midnight' seems to be the most susceptible. Is there any product you use that stops it after it has a foothold? How often do you have to spray??? How much money are we talking??? Is it worth the money for the homeowner? My lawn has much shade plus Kentucky bluegrass, yet I have no powdery mildew.???