Blue hour on Sashabaw Road in winter is a strange, generous light: snow going violet, headlights coming on, the whole road holding still. Michigan Lawn Pros is out in it with the plows, pushing drives clean, cutting the walks open, squaring the ends so the mailbox and the curb are reachable. In summer that same hour finds the mowers finishing a last lawn, edges trimmed and the concrete blown off. Waterford Township asks for both kinds of work, and doing both keeps the crew familiar with every turn and slope on the route. A square-cut driveway and a lawn with a straight edge — that's what the route is for.