JW!'s recipe that was shown is a common one shown across many trapping sites. I have it too and luckily, haven't had to use it in some time. LOL! Never heard the one about using it right away, don't store it, but that sounds good to me. Good tip!
I also had a trap that took a skunk. Needless to say, the trap stunk! I got some tomato juice and soaked the trap in that. Something about the acid in it I guess.
It worked.
G'day
iSnipe