Late-summer evenings in Cheektowaga stretch out long and gold, and the lawns around Pine Hill look their best in that last hour of light — if someone has been keeping them. Green Pro Outdoor LLC does the keeping: regular mowing, trimming along fences and beds, edging that holds the border between turf and blacktop. Spring and fall cleanups take care of the ends of the growing year, when a yard is either waking up or shutting down. A flat lot, cut level and clean at the borders, has a calm to it you notice without knowing why. That is the result worth chasing, week after week.