First full summer in N.C. Move quite frequently, but since I'm here "for good" (probably another year), bought an inexpensive gunsafe for four rifles. Window a/c in bedroom, ceiling fan in room as well. Run a/c in evening, run ceiling fan during the day. Temp in room during the day around 80 degrees (not extremely high humidity due to ceiling fan). Bought 2 "silicone gel paks" for safe. Card (came with the silicone packs) inside of safe turns pink (blue to pink is a warning sign of moisture) only after 5 days in safe. I open the safe up about once a week. The safe isn't airtite, so there has to be some circulation from room air into the safe (should be no drastic air temp difference between inside safe air and room air. Why the quick change in the card color? If the air inside the safe is getting hit by the a/c at night (cold air on the safe surface), would this temp. difference be the cause? What do you guys do down here in the South for gun storage? Checked guns and they look fine. I may be "over worrying", but I'd not like to take a chance. Any input would greatly be appreciated.