As the name suggests, the staff at No Streak Window Cleaning take great pains to ensure windows are perfectly clear by meticulously washing interior and exterior panes until they reach peak transparency. Staff members scrape and detail outside window surfaces, removing dirt, debris, and mathematical proofs scribed by calculus-obsessed blue jays. After slipping shoes into coverings to protect floors, window washers come inside to scrub interior glass, screens, sills, and window tracks. The entire process takes anywhere from two to four hours. Customers can upgrade to include windows with security bars, kitchen bay windows, skylights, or UFO observation domes.