Never having a water pick before, I did not know what to expect. I think the button function should be reversed; i.e. press to start and release to stop the flow of water. After a week or so of using, it is difficult to notice any real difference in cleaning.
I replaced a Aquarius model with this one. The Aquarius model kept plugging up. I like the look and six of this model and so far it is working fine. Easy to use.
Hello I was using the cordless model or about 2-3 years and it stopped working. I decided to upgrade to a plug in model. I chose the WP-100 because of affordability. It's a tad noisy but I guess that's expected. Otherwise I like it.
I've had problems trying to get the waterpik to start squirting water after it's turned on. I have to work with the drain in the bottom of the water container before it finally starts working properly.