There can be a lot of variables with many products and not all products are right for everyone. I have a decent size safe for my main safe and I still use damp rid buckets in there as to avoid complications like you listed above.
Very much agreed.
The Goldenrod dehumidifier and Damprid are likely good products for those who can use them. Have seen too many instances where people rush out to get products w/o seeing or looking for differences beforehand. Are some variables here and there to consider before gathering the goods.
A simple incandescent light bulb's heat can help chase away moisture and dampness in certain locations.
Yup, that idea's gone to the birds?