I read an article on Yahoo/Reuters about a woman who found several different ways to make make ends meet during our economy crisis by using trial offers, coupons and discounts. One of the things she mentioned was a tooth whitening product that was equal to a professional treatment. She mentioned two companies that would send you a trial package of their product for $3.87 each. The article went to mention how one wasn't better than the other, but they worked great together. Unfortunately (or fortunately after learning form this experience... read full review »