Reminds me of my youth when I brought home a mantis egg case that I had found. My mother put it in a mason jar with aluminum foil for a lid with small air holes poked into it. Well, apparently the holes weren't small enough as one morning we were presented with well over 100 little mantis babies all over the kitchen. I wouldn't let my mother use the vaccum and tried to relocate them by hand, but I think she eventually used it anyway.
Thanks for sharing the pictures!