This is no more than ,at best, semi related to the topic of Beetles.
When I was storing a number of boxes in a coolador, from time to time I'd add a box or two that I 'd purchased cellophaned unopened into the Coolador.
Luckily never had a problem. Now, tho a sealed box may sit on a shelf for a week or or more, every box is opened and checked before the cigars go into the huimidor.

Did have a problem, once, only once. Three boxes of 7x48~49 (Churchills ?) that were purchased by a girl on vacation. A nice gesture, someone takes time to do this ,fly back with that extra weight,etc.Everything looked perfect, boxes sealed, no damage. When opened there was not an inch of cigar that hadn't been destroyed by beetles. Thanked her for getting the cigars for me, couldn't tell her the condition of the cigars. The fault was mine.
I'd forgotten to ask her to purchase at the one location that kept their stock right. Most likely she purchased them at a smaller shop. The cost was less than $90.00 (did I say it was a while back?)....but I sure as hell had been looking forwards to those.