Q. Do those toothbrush-sanitizing gadgets work?
A. They seem to, but there are other ways to clean a brush. The germ-killing devices can cost as much as $80. And simply rinsing your brush and letting it air-dry will clean it, and help prevent germ growth, says William Kohn, a dentist with the CDC’s division of oral health. Worried about germs? Keep your brush away from other brushes; soaking it in fresh antiseptic mouthwash may also help. Don’t put it in the microwave or dishwasher—the heat can damage it.