as well as getting electric brushes, get a timer. We picked one up at Walmart in the kitchen section for under 6.00- it has lasted us more then 5 years without a battery change. Kids need to brush a minimum if 2 minutes 2 times a day. That's 30 seconds per a quadrant (upper left, lower left, upper right, lower right) Go to the Colgate website ofr info and games.