This little gadget is awesome seriously. It shoots out water and floss the same time. The floss pulsates 20 times per
second! It is small, waterproof, cordless, and portable. I bring this with the little traveling case when I leave town.
Of course you dont need to bring the cup as it comes with another tube which you can set on the rim of any glass or cup
and plug the other end of the tube onto the gadget itself.
Let me know if you have any questions.
Jetpik J200 Ultra: http://amzn.to/1GboCdI