These companies provide a free teeth whitening sample. They claim this the free sample are professional whitening products. They offer to send you free samples and you only have to pay the shipping and handling price. They clain that if you use these products together, you will get ultimate teeth whitening experience w/o having to pay the extremely hihg costs of going to dentist. When you submit your credit card info, they do not give you a confirmation number. They send you the free samples (which look tampered with) then continue to charge your credit card and authorize different, recurring charges to your account. When you call the merchant number, they tell you that they cannot locate your account number (bc they don't give you a confirmation # or order #) and tell you that "sorry but we cannot help you." The charges keep rolling in and get more expensive. This is fraudulent and please do not be a sucker like me and give out your credit card number to these merchants. It is a big scam and a major headache to keep disputing the unauthorized charges. If I would have used a debit card, they would have sucked me dry!!!