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Message: <blockquote data-quote="John S." data-source="post: 1364857" data-attributes="member: 25781"><p>Armorall along with any other preservative would have to dry out or evaporate very thoroughly before the object in question is stored long term.  Otherwise the result will be a sticky mess when the bag is opened 5 years hence.  Given that I've seen eye guards and other synthetic rubber goods survive at dealers after many years with no preservative I would not recommend their use for eye guards put into storage.  At best it's overkill with the risk of having eye guards left with a sticky coating of unevaporated preservative.  Just leave the eyepieces in the bag and box in a dark closet and all will be fine.</p></blockquote><p></p>