I've used tung oil on the outside of my hives for years and never considered using it on the inside? Recently, while searching for some online I saw several sites that said it was safe to use on the inside of the beehive. So that leaves me wondering (1)Has anybody here ever done that? (2)Would it be of any benefit?
Naturally, I wouldn't do it on any hives just before putting bees in there. I have two empty hives that died out so the beehives would sit until next spring to air out before any bees would be installed.