Wait for dusk in late August: the heat finally lets go, fireflies lift out of the grass, and a wide Stone Mountain yard shows its stripes in the low light. Shelton Mowing Company is built around that one act done properly — mowing, with trimming and edging to finish the frame. A big open lawn is honest work, because every wobble shows and so does every straight line. The engine ticks as it cools, the yard sits there looking calm, and that is the whole reward. Mowing routes run through Stone Mountain, Redan, Lithonia and Snellville.