On a June morning the mist comes off Lake Hopatcong and hangs below the ridge, so the lawns up in Mount Arlington are bright before the water is. Benny's Landscape Services, LLC is mowing by then, working the slopes that make hillside properties their own kind of problem, keeping the passes even across the fall of the land. The week's list is mowing, trimming, edging along drives and walks, and the cleanups that spring and fall demand. Highlands soil is thin over old rock, so cut height matters more here than it does down in the valley. A hill lawn that reads level from the road took somebody real trouble, and that is the part worth being proud of.