If you live in a humid climate, you know how quickly mold and fungus can consume everything. The same is true of your lenses and camera gear.  Humidity is a killer, feeding any mold spores that have made their way into lenses, creating fuzzy spots that will ruin your glass. I've even had it happen to one of my lenses when living in Los Angeles and it's not even that humid there. Here are some really cool and inexpensive tricks to protect your lenses from humidity.