Have you ever heard about a melamine sponge that removes all stains without any detergents? Now imagine that it’s just one of the nozzles attached to a device that works like an electric toothbrush, spinning at around 8,000 revolutions per minute. You don’t have to put forth any effort, you just gently rub the stain until it vanishes. By the way, you’ll only need a bar of soap and that’s it.