Amazon has a Waterpik Whitening Water Flosser Sale, only $79.99 (reg. $99.99) after you clip 'extra $15 off coupon' with Free Shipping on orders over $25 or with Prime. Expires Soon - Highly Rated at 4.4 out of 5 stars.

• Provides all the clinically proven benefits of water flossing plus extra teeth whitening - restores your teeth's natural whiteness in just 4 weeks while you floss
• Removes up to 25% more stains than brushing alone, removes up to 99.9% of plaque from treated areas, and is up to 50% more effective for improving gum health than dental floss. Pressure Range- 10 to 100 PSI (0.703 to 7.030 Kg/cm2).Flow Rate per Minute- 13 Ounces (400 mL)
• As gentle as regular toothpaste, use one fresh mint whitening tablet daily - place in the infuser built into the flosser handle to remove stains from hard-to-reach areas, between teeth, and at the gumline
• The Waterpik Whitening Professional Water Flosser is ideal for those who want to easily whiten teeth at home without harsh bleaching chemicals or expensive teeth whitening treatments
• Includes 30 Whitening Tablets, 2 Classic Whitening Tips (WJT-100), 1 Plaque Seeker Whitening Tip (WPS-100), 1 Orthodontic Whitening Tip (WOD-100), Tip Storage Case, 3-year warranty, compatible with 120VAC/60Hz outlets, for use in North America only

• Free 30 day trial to Amazon Prime for Free Two-Day Shipping.
• Students get a free 6 month Amazon Prime Trial