Watched TruGreen guy June 24, temp 88. He sprayed something on grass. Wearing gloves and probably boots. (But not sure as his pant legs were pulled down over his ankles). Then I was surprized, as he got out a back pack sprayer (no gloves) and sprayed weeds along the edges of the yard. Why would they go to the trouble of spraying liquid fertilizer and not apply overall weed control?