14 Treatments- Crests 3D Whitestrips | $27 | Amazon | Clip the $5 coupon

Let’s say you’ve already upgraded to a good toothbrush; what’s the next step for cleaner teeth? Well, this 14-treatment box of Crest 3D Whitestrips is a great place to start. Just be sure to clip the $5 coupon before you check out to get them for $27.