By August the River Raisin runs low and slow through its bends, and the lawns above it need cutting whether the heat lets up or not. Dave's Complete Lawn Care Inc. keeps a full year's ledger in Monroe — mowing and trimming right through the growing months, borders kept sharp, then plowing and salting when the river goes gray and stiffens at the margins. Complete means what it sounds like: the same properties looked after from the first cut of spring to the last storm of the winter. There is a quiet reward in pulling away from a place that simply looks finished. That holds in July heat and in February dark alike.