This has been worst year for cancels in 12 years. Between drought and crabgrass issues , i have stopped trying to save em. The cost of drive75 and constant battle with informing customers of proper mowing height and watering needs in fescue lawns(north carolina) has finally proved to costly to keep up with. I'm going full maintenance without "fert and squirt only" next year. To many homeowners absolve full responsibility when they hire you to do a simple 6 app program. I would be interested in hearing how others in the transition zone deal with late season crabgrass infestations. 1. If you water a tall fescue lawn like you should in this area during late spring and summer the pre emergent breaks down very quickly and leaves a long unprotected crabgrass opening before seeding. 2. I fit rains alot ( see above) 3. if it doesnt rain or you don't water , expect the lawn to go dormant , show signs of drought stress and eventually die/thin out , leaving some nice areas for weeds and crab to emerge. This doesnt even touch on Fungus issues with proper watering....and the resulting potential problems with that.