There is a week in October when the leaves let go all at once and Boonton goes from green to bare in about four days. The Slevin Group Landscape & Snow works that hinge in the year — leaf cleanups and the final mowing, then the switch to plowing, walkway clearing and de-icing once the first real storm crosses Morris County. Spring and summer bring the steady part: mowing, edging, trimming, beds kept clean. At dusk on the back side of a snowfall, with the driveways opened and the road gone quiet, a street looks like it has been taken care of. That is the measure either way — nothing left over for the homeowner to do.