Hello. My lawn service company did some kind of special application a few days ago that included a fungicide and fertilizer. The tech told me it would help the lawn of course. Well it did two things. See attached pictures. It made the lawn look a lot worse and it put a white residue all over the lawn as well as my paver, stamped concrete, siding, and fence. Rinsing did not remove it. Scrubbing the concrete will a deck brush did mostly. Watering the lawn does not remove it from the grass blades. So, this is not powdery mildew of course. It is a chemical. I would like to know what it is, will it harm the grass, and will it go away over time. Lawn company is not helpful or responsive so far.
Tim3898
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