I'm not a "pro" trapper
I've never kept any of my baits or lure in refrigerators
or any of that. I don't have it in temperature extremes,
but I don't give it any special care either. I might be
completely wrong in doing that. I don't know.
All the bait I've made was preserved with sodium
benzoate, and left to stop any taint. Then I put
whatever bait solution in and mix it up well and
let it sit for a couple of weeks and stir it all up
and let it sit. Repeat etc.
I just put up 2 gallons in some glass jars not too
awful long ago. They're in a dark closet away from
excess heat and cold.
All my baits smell the same to me for as long as
the jar lasts, I guess because of the preservative.
The urine also has a preservative, and still smells
pi$$y to me all the way through the bottle.
If you have any bait recipes that don't involve
expensive or hard to get ingredients, I'd appreciate
if you'd post