That's the latest mandate from the Japanese government, in an effort to minimize global warming.
According to Yahoo! News, wives had been separating their husbands laundry, due to the odor, and washing them separately from the rest of the household's clothing. Tsk! Tsk! Now, everything goes in one load.
More from YourTango: 5 Beauty Picks That'll Last You All Of Memorial Day Weekend
Thanks, Japanese homemakers, for helping to save the planet.