Think about what you' re asking here...Cigars contain organic materials, even when ' dried' they contain a goodly amount of water. I don' t think that you' d notice accelerated corrosion or oxidation of your firearms if you keep a box or two of stogeys in your safe, especially if you keep a silica pack in there (it will NOT be a factor then, as opening the door would let in more moisture than the cigars would contain), but therein lies the rub, your cigars will suck because your silica will dry them beyond optimum ' smokeability' . My bottom line, cheap cigars, stick em in there, cuz they don' t smoke/taste too well anyway, but your fine cigars, well, I' d be buying a humidor, or keeping them in the fridge at least!