Lens fogging up on cold days

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  • mforsta

    Pops
    Rating - 100%
    4   0   0
    Jun 25, 2012
    494
    28
    Denham Springs
    Who has a solution to stop my binos and rifle scopes from fogging on cold mornings? They fog up when I bring them up to my eyes. I then have to wipe the lens so I can see, only to have them fog again.
     

    twinin

    Well-Known Member
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    23   0   0
    May 5, 2017
    952
    43
    Houma
    Leave them somewhere cold but dry overnight. New ones are supposedly fog proof but condensation still happens.

    Of course, there's always Cat Crap. Google it
     

    Blackhawk

    Blackhawk
    Rating - 100%
    9   0   0
    Mar 3, 2008
    907
    28
    Pollock LA
    Most of the glasses-cleaning liquids also have anti-fog properties. Stop by your Walmart Optical and see what they have. I've also used a paste type anti-fog in a small jar, seems to last forever. Just google anti-fog. You can also do it the old fashioned way and rub your finger on a bar of soap then rub your finger on the lens. Buff lightly with a lens cloth.

    If you are near an army surplus store just look for the Protective Mask anti-fog cloth. Take it out of the plastic "pill bottle", unfold and clean the lens, refold and reinsert in the container and screw the top on tightly, should last for a couple of years.
     

    mforsta

    Pops
    Rating - 100%
    4   0   0
    Jun 25, 2012
    494
    28
    Denham Springs
    Thanks for info. The binos are left in my pack which is hung outside on the porch at the camp so they are acclimated to the temp. They fog when you put them up to your eyes. The rifle scope is not as bad as I have a little air space between my eye and the scope. Of course it'll fog if I breath a little of it.
     
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