On a good summer afternoon there are gliders working the ridge lift above Dansville, hanging over a valley quilted with fields and mowed yards. Picture Perfect Mowing tends the small green squares of that view — regular cutting, string trimming along fence lines and foundations, edging where lawn meets walk and drive, and blowing the clippings clear when the cutting is done. Spring cleanups get the winter mat off the grass; autumn cleanups take the leaves before the first heavy rain glues them down. Stripes running straight across a lawn and a border cut sharp — that is the part worth doing well. North Dansville and the towns nearby keep them cutting all season.