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There are thriving communities online that sell and trade them. You can buy an eggsac of the Chinese species for fairly cheap at certain stores or online.

They are a beneficial insect and will eat other garden pests.

I met a bunch of people through Facebook groups and started trading that way. I have some coming in the mail from breeders overseas. I can't wait to share the photos when they hatch!

I'll be sure to check them out.