I keep them in tupperware containers with no lids. They do not crawl out. I feed the chow and they do pretty good. I always wash my hand before removing them to clean out the container. They are messy. The biggest hassle is cleaning out the container of all the poop!! They eat and poop eat and poop.....I do get them to cocoon and I feed the moths off when they hatch out. I do not breed them, so cannot help you there..