By ADITHI RAMAKRISHNAN, Associated Press

NEW YORK (AP) — You keep your trusty reusable bottle filled with only clear, delicious water. Do you still need to wash it?

Experts say reusable bottles get grubby no matter what liquid they’re filled with, and it’s important to clean them regularly.

Water bottles pick up germs from our mouths when we take a sip, and from our hands when we touch the straw or lid. They’re covered in tiny, tough-to-reach nooks and crannies which can become breeding grounds for mold, bacteria and other microbes if left un-scrubbed.

“It seems like something mundane, but it is extremely important,” said nurse practitioner Michele Knepper, who works at the University of Pittsburgh Medical Center.

Unclean water bottles can cause stomach aches and itchy throats and

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