This company targets people through ads at different websites, for example, I just saw its ad on NewYork post's website describing how a Mom turned her yellow teeth to white for just $4. Before you decide to take advantage of this great offer, do not forget to carefully read the terms and conditions posted on their website. In order to avoid around $150 charge on your credit card you must cancel within x number of days after placing the order (not from the day you actually receive it and it arrives just before the day that period expire... read full review »