We check plaque removal efficiency using a panel of volunteers. Top performers include models from AquaSonic, Burst, Hismile, Kingheroes, Oral-B, Philips, and Quip. A Philips Sonicare DiamondClean ...

Q. I would like to know if it is energy efficient to turn off an electric hot water heater when one is away from a house for a period of time. If it is energy efficient to turn the hot water heater ...