Praying mantises are really a kind of stick/leaf insects that are carnivorous. They devour other insects such as flies, bugs, beetles, bees, moths, crickets, and little spiders.That's why these beneficial insects can be valuable in a patio or garden filled with pests and various other undesired creatures that primarily terrorize, eat, and wreck your delightful floral plants, herbs, veggies, and fruits growing in your yard. Praying mantis food is made up of worms, leafhoppers, mites, leafroller, ...