The Waterpik does exactly what I expected it to do but it seems to go thru batteries extremely quick. I have now put the third set of batteries in it within the last six weeks.
I like my waterpik and think it's effective: I have great oral care partly thanks to this device. My initial waterpik died before the 12 months were up and Waterpik, no questions asked, immediately replaced it. Now that's the sign of a really good company. I will recommend Waterpik brand do anyone thanks to my good results and their excellent customer service.
Had an older model which lasted 8 years. Not pleased with the performance as battery doesn't hold a charge long.
Response from waterpik.comBy WaterPik, Product Support, March 16, 2022
Hello Michaele - We are sorry to hear you were not pleased with the model. The WF-02 is a battery-operated unit. The average customer will replace batteries every 6-8 weeks. How long the batteries will last is not only determined by the type and quality of the battery but also by how often the unit is used. If multiple people are using the unit and/or it gets used multiple times a day, the batteries will need to be replaced more frequently.