Nothing in July looks better than a Bath lawn with a real edge on it — that clean line where the grass stops and the walk begins. S&W Landscaping cuts that line across the city, mowing on a weekly rhythm, trimming around foundations and fence posts, tending beds and carting the trimmings off. Salt air and river damp make the grass grow thick down here, and thick grass rewards a sharp blade. The first cleanup of the year pulls the winter out of a yard; the last one takes the leaves before the rain glues them down. Bath and its neighbors up and down the Kennebec, one tidy yard at a time.