im sure someone already posted this but what do you do for your test package i know you set it up just like you would shipping a snake minus the snake but do you zip tie the bag and open a heat pack also, or just include it in the box? also do you get the box back or is it just a loss( which i am fine with). oh also i dont ship when it warm enough for a cold pack so do i need to include a letter stating the temps that i would use a cold pack. thanks i have shipped many but i always get worried when testing is envolved lol.