I was somehow fooled into ordering what I believed to be a 99 cent trial of this tooth whitener. Missed the fine print that said after 10 days I would be charged $158.00 NON refundable!!! How is this a trial? Calls to customer service were useless. . .they would not refund me the money even though I had not used the product (or opened it) and would have happily returned it to them. These folks are a complete rip-off - BEWARE!