Is this really true?

[eovnu87435ds]

So I'm at my LHS today and pick up some CA... and on my way out, he tells me to refrigerate it because it will last longer. Is this really true? To help with the situation this LHS sucks when it comes to r/c. they have r/c stuff in the window, but they dont sell anything r/c related inside! they dont really have anything there, and I was suprised to hear he had CA. Also, this guy also said to use ketchup as a cheap replacement for shock oil...