They will warn people here about burn, because they don't want people calling about seeing smoke, I have never gotten a warning about farmers spraying. I didn't even get a warning when the county/city (I don't remember now) came and sprayed the sidewalk strip next to the road in front of my house. And what ever that stuff was it was nasty, those weeds were dead black the next day. They just drove down the street hosing the curb down!