Used to brush their teeth thoroughly and effectively! The brush head is ideal to have access to all areas of the mouth unlike a conventional toothbrush for example. There is a 2-minute timer for optimum brushing, practical battery cradle and the brushes have a wear indicator. Definitely much more effective than conventional brush with its pulsating rotations brushes and mat! a drawback, the price if you take the oral-b mark but there are generic!