We are renovating a 100 year old schoolhouse that we moved onto our property. We removed the plaster and lath and found a fair amount of box elder bugs and asian beetles. The former, especially cover the southern facade of the schoolhouse when the farmers pick corn and beans in the fall.

Should we apply some sort of insecticide to the stud cavities before we run electrical and insulate? We plan to seal (as best we can) any gaps in the siding and sheathing, but those little buggers are very determined. Thanks!