I just got back from TSC and I was buying mealworms, but I saw that on the Happy Hen Treats brand there is no expiration date for the dried mealworms. Do they expire and are they good/ safe to buy if there's no expiration date. Instead I bought the Royal Wing Mealworms that has an expiration date, but I think it is meant for wild birds. Does that matter? Also, it's made in China and looking at reviews I saw that some people don't trust animal food made in China because recently the dog food was poisoned or something like that. The other brand is also made in China, but as no one has posted anything bad about them I assume there is nothing wrong with it. Has anyone had any good/ bad experiences with this brand and are Happy Hen Treats Mealworms safe to buy even if they don/t have a date of expiration?