agreed to accept free sample then recieved invoice for $19.94 , no real person on 877-, only payment options. main ingredient is camphor. This isn't any thing new or different from most products we already have for topical pain relief. However sending an invoice as if one ordered it is a scam! There's no way to find where this company actually has a business office. Oher complian before me, Donald L, put his own phone number on there by mistake. He just sent the letter pretending to be a bill back to the sender.