“How does it keep bacteria from growing in the tube? If something is always wet, bad things can grow.”

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• Hello Germaphobe - Running distilled white vinegar and warm water through the unit and handle regularly, as recommended, will prevent the issue by breaking down any buildup that may be accumulating. Here is a link to our cleaning blog that has detailed cleaning instructions: https://www.waterpik.com/oral-health/product-support/articles/how-to-clean-waterpik-water-flosser-vinegar/.

  Answered by Joan reid 2 years ago

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• The tube stays full of water, but the water is replaced each time the unit is used. I suppose things could grow if you let it sit for an extended period, but that should not happen if you use it daily.

  Answered by r1234 2 years ago

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