So, i've been trying out the Listerine Whitening Pre-Brush rinse. It really does make a diffrence, I saw results within a week. You can purchase this at your local Wal-mart for around $7.00
Rinse your way to a whiter smile with LISTERINE® WHITENING® Pre-Brush Rinse. Rinsing before you brush means a brighter, more confident smile. It's that easy.
The dynamic foaming action of LISTERINE® WHITENING® bursts into action, penetrating teeth to help prevent stain buildup and whiten your smile. And because it's from the makers of LISTERINE® Antiseptic, it kills bad breath germs, too. Available in a great-tasting Clean Mint flavor.