I often find earwigs and woodlice in my beehives, especially when it’s cold. Here’s a photo of tiny baby woodlice (often referred to as carpenters in Newfoundland) underneath the top cover of one of my hives:
I don’t know much about woodlice or earwigs. I only know from experience that they don’t not much or any damage to my hives. I do find earwigs in the cells of comb from time to time. Are they laying eggs or eating honey, or both? I don’t know, but again I’ve never found any creepy crawly things in my honey. I’ve never seen any kind of damage to the brood nest or the comb from anything other than shrews and mice.
Are earwigs and woodlice harmless? I think so.