Saturday morning on a North Arlington block is a sound as much as a sight — mowers starting up one two-family house at a time, all the way down to the corner. JP Lawn And Landscaping LLC works that rhythm, cutting and edging front lawns only a few strides deep that are nonetheless the first thing anybody sees. Stripes go down straight, the walk gets trimmed to a hard line, and the sidewalk is swept behind them before the crew moves on. Hedges are kept low enough to let light onto the porch, borders held where they belong. Twice through the year the whole yard gets a full clear-out and begins again clean.