Isn't Hydrated Lime known to cause cancer? (don't know just asking)
Let us know how your experiment goes. I almost a week in my oil trap from greenbeehives and I've got at least 50 beetles and about 5 larva (SHB/WM?) and two yellowjackets.
I'm going back in this weekend. It's been two weeks. I want to see how the feeding program is going toward their non existent stores, look to see if there's any SHB in top cover and look for any damage, just look, and to see if they have built up those frames I rotated.