Hi. I'm no expert on this subject and I'm just giving you my humble opinion, but I think that it's extremely inhumane & potentially disasterous to send live animals of ANY species through the mail, regardless of how you label the package. Think about how often mail gets lost; how roughly it's treated during transit; how such a package invites ignorant & cruel postal workers (should there be any along the way - not that I'm saying that's likely, just possible) to torment/mishandle/play with your wee little guys (imagine a game of football); how they have the right to live peacefully just as you do. Read up on the mortality rates for posted creatures - I suspect that they'll be quite high. How much risk are you willing to take with their little lives??? I hope you don't interpret this as a flame, but I vehemently urge you to find another way to send your turtles besides shipping through the mail or a courier service....