Express shipping is required for Praying mantis. Supply shipping is for all supplies.& cultures. Fly shipping is for feeder insects ONLY no supplies or cultures. Please pick the appropriate shipping option. Mantis and supplies will be billed if you happen to pick the wrong option. I will bill you through paypal and you can just follow the links. There is no guarantee for feeder insects unless using Express mail. Fly pupae may hatch in shipping, please read feeder care sheet to know how to care for them when hatched. Do not purchase pupae if you are afraid they will hatch in priority shipping, take Express shipping instead.