Originally Posted by greendoctor
That is a good indicator. My indicator is when I see BTA(black turfgrass Ataenius) at night around lights.
I have a bank that I treat that gets those in one strip of zoysia that just so happens to have the spot lights that shine on the American flag and also has a lit up ATM sign. Its the only property I've ever seen them on. They'll devastate the turf in that one strip if I don't treat for them each year.