The dream could come true thanks to the Teflon application process devised by Jeffrey Youngblood, an American engineer professing at Purdue University, Indiana. This ultra-thin coating has the property of rejecting all kinds of stains and greases, and can be applied to floors, walls, windows, furniture and even car windshields . A simple wet cloth, and presto! everything is nickel. That's the great side. No more detergents, goodbye to classic cleaners, that's the green side. But it will be necessary to wait for the marketing of the miracle product, and that, it is the frustrating side.