Hi UncleChester. Those little critters are Hide Beetle larvae. I'm in the UK and we get 'em here too! I wondered what they were as well and looked into it. The beetles themselves thrive in abattoirs and enjoy the carcasses, hence the name "Hide". I can only imagine that they occur at some point in the crix breeding process and get dumped in along with the crix. Either that or they are added purposefully to consume any dead matter. I have fed them to my Whites tree frogs and so far so good. But I did hear that they may be able to eat their way out!! So promptly stopped. Hope this helps.