Waubonsie Creek runs quiet behind the subdivisions on Aurora's south side, and on a Saturday morning in June you can hear mowers working up and down a whole block at once. Superior Lawn Maintenance is one of them, moving through Aurora yards with weekly mowing, trimming, edging and the cleanups that open and close the growing season. Nothing complicated — arrive, cut it right, blow the clippings off the walk, move to the next address. Done that way, week after week, a lawn holds its shape all summer. That steadiness is the whole of it.