Ever wondered if you can reuse water? No, not the water you drink but the one you use for bathing! One would say who would want to reuse the dirty bathtub water. But, wait a second! What if that same water is 100 per cent disinfected and even purer than before! The Japanese have added another feather to their cap by launching their latest Sauvé floating bath tub disinfectant available only for $38. The appliance is not only a boon to the Greeniestas but also to the places which face water problem. The gadget works on the basic principle of purifying Silver Ions that act as disinfectant when electricity is passed in it. The entire process takes just a couple of minutes. This extremely useful device measures 86×86×110mm, weighs 250 grams and as of now, is available only in Japan.