Bought this to reduce dental floss usage. It has been excellent. Rather easy set up, but you need too use it a couple of times and adjust speeds accordingly. Being a plug-in and not battery operated is a big plus. Water tank is more than enough. Overall, very pleased with the product!
I have a water Water Pic science the late 1990's. Have never had a cavity while use. Do brush teeth regularly, but believe this was a major cleaning tool.
I bought this product six months ago after getting braces. Flossing was difficult and time consuming with braces. After using this the first time I was very pleased. I don't have to floss when using this waterpik. I even take it with me on vacation. Excellent product.