Sörbo Instructional DVD provides labor-saving methods in window cleaning for the 21st century with Sörbo Samuelsson. Instructions on “The Z-Method”, “The L-Method”, and the use of the “Eliminator” Line of Squeegees for storefront window cleaning can help reduce labor by up to 80% and time by up to 50%. These professional window cleaning tutorials are now conveniently all on one DVD (not available elsewhere). This is a quick way to learn how to clean windows efficiently and profitably. The methods are suitable for both residential and commercial routes. This DVDis a perfect resource for starting a new company or improving your job performance.