Billy bee it doesn't matter the type hive, SHB's don't care. I have Langs and TBHs, I usually see one or two beetles, those numbers the bees can control. This year is different here, weather, flow and etc. I had a TBH that the queen swarmed, didn't have a queen cell either. Number got down quick and some SHBs moved in. Took out several frames of honey and froze. Got the hive going and when numbers got back up added frozen honey back. Good luck to you and your bees.
Crane, there are oil trays between frames and under SBB, also roach traps, DVD cases. Check if you have a queen and that she is laying. Reduce the space they have to protect until their numbers get better. Good luck