I have beetles, but I don't see them having any impact on my 11 hives. I don't use any poisons. I smash them when I can but they are not hurting my hives. The hive that had the most shb (to my eye) had the most honey per frame this year. Is it because I use plastic frames??? Is it because i use feral bees??? I don't have varroa problems either. No chemicals go into the hives. I use sbb and screen tops from march to october but close them up in winter.