So while the postmaster put my first package in the wrong mailbox I emailed and said I didn\'t receive it. By the time I called the company they had already sent me another package which I received about 4 to 5 days after the first incident. However the product works I seen a change by my 3rd use and in my case means a lot since I have never had my teeth bleached. To mold the tray was easy it was the trimming that was slightly tricky. And it didn\'t take a lot of gel and I left it in between 45 mins to an hr at night before bed. It does make your teeth a bit sensitive and it does tingle that\'s why I say do it at night. I did stop at some point but I have been sick so will start again soon. I still have a lot left. I do recommend to others it works pretty good only thing is it should include more trays just in case you mess up the first one.