Boeing's 'self-cleaning' lavatories were a big hit. Not only as an 'engineering marvel' but another way airlines can cut labor costs and reduce man-hours via automation. The company says it uses ultraviolet UV light to kill 99.99% of germs -- and even puts down the toilet seat lid.
However, if people leave paper or 'water' everywhere, it will still be there. Good to take anti-bacterial wet wipes with you.
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