I was using passive at the time. My humidor's were in the upper level of the house, the brown out lasted long enough to kill the AC and temps in the house shot up like a rocket, one of the hottest days in Cinci in a long time. Power kept browning then dying over and over.
Thought nothing of it, but when I was going for some CCs later I saw a beetle actually flying inside the humi. Seeing stick after stick with holes in them I took every stick out of the boxes and inspected them, removed the crawling bassard a I found then researched how to kill them and save my stock.
CCs are cultivated without the benefit of most pest control, too expensive in a poor country, so larvae on the leaf happens. Give enough sustained heat and runaway humidity and those little bassard come to life. For this very reason I keep them in their own separate humi from the rest of my collection.
Pitched the damaged sticks and opted for the deep freeze method to kill off any others from hatching. Wrapped the entire box in paper towels, then plastic and froze the boxes four days, then to the fridge and slowly let them come to room temp while still wrapped and insulated. No more beetle issues after that.
I went to active humidification then moved all of my collection to the basement to keep them cool in the event of a repeat where all my sticks have gone ever since.
Perfect conditions in that part of the world, 70 deg and 70%, there you can literally leave cigars stored in the open air. Humidor's are for the rest of us poor SOBs in the rest of the world.