My game cameras fog up at times and there's water on the inside of the lens when this happens. That ain't doin' the 'lectronics any good neither. A thought came to mind. You know those little desiccant cartridges/packs that come in pill bottles like aspirin? The ones that say "do not eat" on them? Take 1 or 2 of those and close them up inside your camera. Mine will dry out by the next day.