Generally people that can use a computer and order ice cream online would have had experience with dry ice one would think.
When I was a kid at 6 years old in South Africa, we'd get dry ice from the guy on the ice cream bicycle. Your body actually has a physiological response to the dry ice burn and you will release it before injury..... Try Yes, I'm a Dr..
May I add here. I shipped and received frozen products all the time. It's delivered by UPS and FedEx Express. Dry ice needs to be stated when shipping.