Powerful, but not easy to clean [SEP] I had never used a water flosser before so was not entirely sure what to expect with this the first time.<br />It takes a little bit of practice (well it did for me at least) to not get water everywhere, I found the water pressure to be a little forceful at first but learned how to maneuver it to get it where I wanted it to go. It does leave my mouth feeling incredibly clean and I much prefer this to using old-fashioned floss. The different attachment heads are very easy to switch out. The only thing I'm not crazy about is there is really no way to clean/dry the water reservoir between uses. I've followed another users suggestion to rinse out with an anti-bacterial mouthwash occasionally which I suppose is better than nothing.