Hi Life Coach,
There are plenty of over the counter products that work OK, they're all more or less the same stuff with different methods of applying them to your teeth. White Strips by Crest is one of the ones I've tried myself but nothing works as well as placing the bleaching gel in a custom molded tray. That will hold the gel in place and whiten all your teeth instead of just the ones the strips can cover. For those who can afford to go for a professional whitening, check out:
http://www.britesmile.com/linkshare_partners/?c1=aff&source=LS&kw=nullYou'll get results in an hour, and a free touch up program, and professionals will help you with any problems or concerns.