You can. There's many Mantis breeders out there. I caught a mantis once, and put her in a little plastic see through tote box with drilled holes, next thing I know about a week later she was dead on the floor, but there was a big waxy looking egg sack stuck to roof of box. It did nothing for like 6 months I left it there, then one odd day I found these little see through tiny tiny bugs all over the place.. HAHAHA.. they were f'kin baby little translucent mantis's, was crazy. None survived.

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That's crazy.