This year was the first time I had mold in over 5 years. I leave my cigars as they arrive (as far as cello on or off), so it was confined to a couple of sticks in 3 different boxes. I wiped them down and kept an eye on them and it never came back. I regularly inspect my collection and keep my RH in check (I'm convinced the mold came from the vendor and I just didn't notice upon arrival)....so overall I never really deal with it.