My yard is a tall fescue, I live in Kansas and I have been having some issues with some small brown spots appearing. I did apply GrubEx in early May; however it has been quite wet. I did apply some Sta-Green 20-0-0 about 5 days ago; however I am not sure if this is grub damage or some type of burn. Its pretty located to only a few small locations in my yard and nothing wide spread. Any thoughts or suggestions would be greatly appreciated.