Nutting Lake lies flat as glass most July mornings in Billerica, and the humidity coming off it pushes the lawns on the surrounding streets up thick between cuts. AVPavers INC keeps those yards in hand with regular mowing, trimming, edging along the drives and walks, and cleanups when the season turns. Growth like that punishes anyone who skips a week, so the schedule matters as much as the machine does. The good part is standing back afterward and seeing a yard that looks unhurried, even in the middle of the wettest stretch of summer. Sidewalk swept, edge cut true, and the property looking level from one end to the other.