Where Route 25 splits from 25A, the Smithtown bull stands over the traffic with the patience of something cast in bronze, and in July the heat shimmers off the asphalt around him. ARS Landscape & Design, Inc. spends those long midsummer days on lawns a few blocks off that fork, keeping mow height up so roots stay shaded and the green holds. Edging along curbs and walks, trimming close to foundations, clearing the debris — the sort of work that reads as effortless only when it is done every week. Cleanups open the season in spring and close it in late fall. The reward is a property that looks composed from the road, whether it sits in Smithtown, Nesconset or Hauppauge.