I have a single hive that has had a fairly large SHB population but have never seen any larva in the frames. I have removed frames and frozen the adults to control the most recent spike in population however I was looking into other options. I had experience with SHB traps and have ordered some to put in the hive however I had seen online that Wintergreen oil would work to kill off the SHB. I don't know if this is true and would like input to allow me to better treat the infestation. I found the site here, https://beekeepclub.com/how-to-get-rid-of-hive-beetles-the-beginners-guide/ . Thanks for any input or responses you can give.