Folks, I found this old topic, it looks like it has been about 14 years since it was discussed, so I thought I would see if anyone has any updates to add. The starting thread talks about leaving Instruments in hot cars. I am not asking about that issue. We recently moved into a house that apparently has a ton of moisture in the air. We found mildew on leather boots in closets. We are running a dehumidifier to help, but there is still a lot of moisture in the air. Enough to fill up “damp rid” containers in closets. The house doesn’t smell, so I think it is only a problem where there is no airflow. I thought a few silica gels packs in bass cases might help. But I didn’t think about them pulling needed moisture out of the wood of the bass. I just don’t want to allow pitting or rust on metal parts. So does anyone have anything new to add? If not, I’ll go with Mica’s suggestion that they don’t help or hurt much. In my case, with a lot of moisture in the air, and the case not allowing any airflow, I figured I should err on the side of removing moisture from the cases. Thanks, Allen