White delivery vans scrawled with purple and teal lettering roll into driveways twice a week, hauling dirty clothes away and returning them clean and fresh. The magic happens at Four Seasons's Squirrel Hill headquarters, where a second-generation owner helms an array of dry and water-based cleaning services. He and his cleaning team inspect each piece to single out stains before subjecting them to a dry-cleaning machine with organic-based fluid and other eco-friendly techniques. During their specialty Execu-Shirt regimen, techs hand-scrub collars and cuffs, replace missing buttons, and quiz them on Fortune 500 companies before ironing and folding or hanging them. They also tailor ripped seams and sagging hemlines, store furs in a temperature-controlled vault, and preserve wedding gowns with a museum-style, acid-free protection process.