I raise my own mantis for food. I just moved one of my juvenile pansonii to a smaller enclosure, because he was looking a little thin. Worried he was'nt eating enough, I put two walking sticks in, three small dubia roaches, some free roaming crickets and lastly a mantis.
Mantis was consumed in seconds. Mantis get the biggest feeding reponse from my guys, even bigger than, green freshly molted grasshoppers.