After using for over a month, I am totally satisfied with the water pic. Just remember to orient the tip so you have full view of the off switch in the mirror. Once on, I keep one finger on the off switch to avoid spraying outside your mouth...
It took me awhile to learn how not to get water all over the mirror, also awkward to use. I think I finally got the hang of it. Wish the water tank was clear instead of dark blue.
Used about 3-4 times. I recently had deep cleaning, have to be gentle with gums to prevent further receding as it heals. But it cleans gum line well. Gets into areas that are tuff to reach with flossers. I use in shower, fill with warm water with mouth wash.