Summer comes on humid in this part of Cook County. Thorn Creek runs low and green through the woods east of town, and the lawns of Chicago Heights grow fast in that same wet air — an inch between visits, sometimes more. MuLa,s Lawncare keeps up with it: mowing on a steady rhythm, trimming close along fences and foundations, hauling off the clippings and leaves when a yard needs clearing. On an August evening, with the cut done and the borders tight, a lawn here holds the last of the light like it is holding its breath. That is the result worth driving back for.