Put down EZ in August last year in the back yard. We followed all of Fu's the prep suggestions & have had no problems at all - until a couple of months ago when we noticed a patch going yellow & dying off. At that time we thought it was from either lack of water or dog wee & expected it to fix itself but it hasn't & has now spread.
We don't have our dog anymore but the dead patch is growing. Grass around the area is nice & healthy looking, as is the rest of the yard. We first though lawn grub but haven't seen any of the telltale flying bugs that indicate lawn grub & have sprayed for lawn grub anyway with no change.
The grass firstly goes yellow then starts to dry out & look like straw & dies of totally.
Will post pics tomorrow but in the meantime - any suggestions anyone?