The Waterpik Cordless Advanced Water Flosser is a game-changer for anyone ... including those hard-to-access back teeth, and the long-lasting battery holds a charge for up to four weeks.

The best water flossers leave your teeth feeling squeaky ... We've put bestselling corded and cordless water flossers – from £35 to more than £100 – to the test to bring you our top picks. We tested a ...