Don't store equipment in hot areas or areas subject to fluctuation of temperature. Near the furnace is not a good idea.

Do not store guns in a gun sock.

Hard plastic covered cases can be a problem if moisture was introduced into the soft foam inside.

A Dehumidifier is perfect to get rid of moisture in a humid area (New England)

Desiccants are very good.

22 ammo is not sealed, and most commercial ammo is not sealed against moisture.

Keep equipment out of direct sunlight, the metal of the gun can get searing hot, and the heat can effect the accuracy of the ammo. Always cover your equipment from the sun.

Cold guns will attract moisture, including inside the gun, i.e., springs, hammer, etc.

Your scope in cold weather to hot temperature will fog scopes, shooting glasses.

Wood also absorbs moisture, grips, wood shooting box.

Always check your guns once a month for rust. Take your grips off to check for rust.