straight "roach killer (boric acid)" or some kind of mixture?I am trying a new beetle trap this year, they are thin CD cases with pollen patties and roach killer (boric acid) in the center. I'm not finding any adult beetles though; my hives aren't infested but occasionally my bees will chase them to the sides and I'll squish them. Still debris being blown or drug inside the traps, and there are dead mites. So I don't know if it's working for adult beetles, they are just dying elsewhere, or it's just being used by mites instead?
I'd try mixing the boric acid into the pollen patties.Boric is slow acting and beetles eat a little and die elsewhere so you hardly see them dead in there.They die and bees haul them out of the hive.I have used it and it really gets them.
They are in northern Illinois, so I imagine they are in Indiana as well. Nasty things.PS....I find it a bit difficult to believe that shb are a significant issue in Indiana.