for the money and portability nice choice [SEP] ok its not gonna be as powerful as an electric water pik but i did not expect it to i do however think it has plenty of force to push food out between your teeth is nice and portable and for the price seems well made the directions say you can use the unit with mouthwash i use spry oral rinse in the chamber which contains xylitol to further improve cavity and bacteria prevention all in all a good device inexpensive efficient and most of all very portable one note do not remove the sticker on the side of the unit the directions say to but who ever designed the glue was not aware your suppose to remove it you will end up with a gooey mess on the side i had to put tape to cover it up