Setup... two adjoining properties, one gets plenty of irrigation and proper amounts of fert, the other never egts watered, and no ferts applied. Of course, the first property has a full thick stand of mixed cool season grasses, the other is dry, full of thatch and quite a few weeds. They both developed circular dead patches of turf in a very sunny location, at about the same time. At first I thought it was a fungus problem, but when the next house got it, I had to think other than fungus, with such water starved turf. I did the chinch bug flotation test with a 39oz coffee can and lukewarm water. In about 5 minutes, there were at least 100 extremely small white nymphs of some sort that floated to the top. Some were sort of "twitching" as they floated on top of the water, but they were white... not what I expected to see. I did not see any adult chinch bugs, just these small white nymphs which were so small they are hard to even see. No big eyed bugs either. I'm stumped. I know it isn't grubs, cant be a fungus since one property gets no irrigation and we've had little rain... what are these bugs? Are they the cause of these circular dead round spots? At the edges of the dead spots, there are blades of grass that look healthy for 1", and then completely dead, straw colored. A lot like dollar spot, but no green in the blades from the brown border towards the end of the leaf. Any suggestions /guesses welcome!