You did not apply a preemergent in the spring like you normally do, hence the reason why my yard is infested with sedge weed. When the tech was here last week he explained that he had a new chemical for the sedge weed but he could not apply it until September.Call back in three weeks which would be the second time since the last scheduled treatment.The regular weeds are not getting killed like they used to. I have noticed that whatever tech I have gotten they will only spend 30 minutes or less whether your lawn needs it or not during the scheduled visit. Not a happy camper since Sean Robinson left, he always did it right. Need to see improvement, patience is wearing thin!