Well the other day I dug out my quart jar of frozen oil sacs, thawed them, and drained the oil. I didn't find anything in archives on ideas on what to do with the remaining sacs; grind up for lure additives or use in combination with a bait solution? Looking for ideas please.

rott them down into a paste they make a decent stand alone attractant but put it deep or high!Takes very little to scent a set to. I assume these will be used on predators ?

Yes, that is correct Tony. Would I need to add a preservative to it after it has rotted down or being oil sacs maybe no ?

yes I would once they get to the point you like preserve them