Any long term camera deployment  comes with its own problems.  The last thing you need is fogging up of the lens or enclosure window.  The anti fog spray is a great tool to keep in your kit bag.  Simple spay onto the front window of the camera or weatherproof enclosure after installation and wipe with a clean cloth.    The anti fog spray prevents to build up of local moisture caused by the changes to local dew point and if applying optimises the clarity of your timelapse video.

Ingredients: Water, Isopropyl Alcohol, and Detergent