By using Listerine mouthwash, your teeth will have 24-hour protection against plaque and gingivitis germs.

For halitosis, use Listerine.

The same is true for mouthwash, but if you've ever actually used Listerine or a similar product this is a bit of a no-brainer.

Listerine Whitening Refresh Freshening Whitening Rinse ($5.99, listerine.com) Get brighter teeth with just a rinse by using Listerine's Whitening Refresh Mouthwash.