Good points, Skip,
I normally use a non-ionic surfactant in my solutions, particularly when spot spraying, as the cost is minimal when spot spraying; I am looking for better herbicide activity.
My calculations how Square One applies about 0.03 lbs AI Carfentrazone/Acre
I think I applied Quicksilver at about 0.05 lbs AI/Acre. More, but still below the maximum label rate for moss. Of course, measuring the application rate with a tiny handsprayer is difficult to say the least. I know it took about 5 seconds to spray an ounce. And I mixed 2 milliters of Quicksilver in one quart of spray solution. The rate must, of course, be approximate.
I was hopeful that the product would be safe on new grass, even a bit over the label rate.