Is it possible to wash the window in one go without detergents and leave no stains? SURE! The Traditional napkin from the White Сat company does it. All you need is just WATER. The napkin thoroughly cleans glass surfaces, windows and mirrors, glossy furniture, lamps, chandeliers, chrome plated and other surfaces. It does not scratch or damage surfaces. It does not fade and crumble. It does not trigger an allergic and asthmatic reaction. The napkin serves over 5 years. The White Cat has been on the cleaning market since 2005. Keeping you healthy and preserving natural resources is our top priority!