I had purchased a scent machine a while back. Did not receive and they sent out another one. I have been in contact with them a few + times. I needed a new plastic tube for inside scent machine. I would have purchased it, but when I talked to a guy on the phone he was, oh wow I don't know where you would get one! Not sure a second time. The best one, my girlfriend said check out something (?) another type of gadget from a plug in, that worked for me!! What? Very displeased with customer service. They have no clue! Could it be, they were not happy with sending out another machine. Just needed to put this out there, since I paid $99.00 for this and have not used it in over a year.