Saturday morning on the streets off Harlem Road: screen doors, sprinklers, and the smell of cut grass drifting from one backyard to the next. Ferguson Lawn Services adds to it — mowing lawns to an even, unscalped height, trimming around posts and plantings, edging the walk so the line between grass and concrete is unmistakable. Spring cleanup pulls the winter debris out; fall cleanup takes the maples down to bare turf before the cold locks in. Cheektowaga's yards sit close together and everybody sees everybody's, which is a fine reason to do the job properly. A tidy lawn is a small, generous thing to give a street.