How to use it with more than one person is questionable! It works OK, but seems for too brief a period at a time! (The cordless model.) Am still going through first days, so may feel better about it later.
No, I would not recommend this to a friend.
Response from waterpik.comBy Waterpik, Product Support, July 13, 2017
Thank you for providing your feedback! Our Countertop models feature a larger reservoir and would allow for longer periods of continuous use. You can view a more in-depth comparison at https://www.waterpik.com/oral-health/blog/countertop-cordless-best-waterpik/
If you leave water on the reservoir tank it will leak, is a nuisance to make sure that not water isd left on it , other wise it will drips water all over.