If your spring cleaning ritual doesn't include thoroughly washing windows, it probably should. The company to do that, and more, and do it right is Squeegee Klean. They have standards that will meet or surpass your own, so bid on this item and start your cleaning from the outside in. Certificate will cover inside and outside of approximately 20 standard windows; or, pressure wash a 2,000 square foot home; or, clean the gutters on the same size house; or, provide about one-half the cost of a roof clean up.