I purchased my Waterpik about one month ago & love it.. This Waterpik WP100 does not take up a lot of room on the bathroom sink counter top which is great because my counter top is not that roomy.. I put a little mouthwash in the water container of the Waterpik just for added cleansing but that's a personal choice not a necessity.. I use it once a day along with multiple brushings & manual flossing & it does the trick; my mouth, gums & teeth feel & look clean.. I can recommend this product without any hesitation..
I bought this on the recommendation from my dentist who suggested I use it once per week in addition to my current dental routine. I find that after using, when I brush my tongue against my teeth, they feel just like they do after I get my teeth cleaned at the dentist's office - that's a good thing! It's kind of messy to use with water getting everywhere and tickles a bit on the inside of my teeth but fun and easy to use with good results.