On a June evening in Hanover Park the parkway maples throw long shadows across the front lawns and somebody's sprinkler is ticking two houses down. Polo's Landscaping spends its days making those lawns worth looking at — mowing on a steady cycle, trimming close around the mailbox posts and fence lines, and running the edger so the turf stops exactly where the concrete begins. Suburban grass on this old prairie ground grows thick and fast once the humidity settles in, and keeping ahead of it is simply a matter of showing up when you said you would. The reward is small and real: a block where every yard looks like it belongs to the same well-kept street. When the leaves let go in October, the cleanup crews finish what the mowers started.