Drop a dozen or so in a ziplock bag filled about a quarter full of cod liver oil and chunky garlic you buy in the jar. Shake and let marinate for a day or so. Freeze. Pull out a couple of bags when you are going pike fishing and throw them under the floor heater in your truck on the way. I just cut them in half and hang em on a hook.
If you are using live shiners or suckers, dip a cotton ball in the marinade and slip it on the hook ahead of the live bait. Makes a good slick and stanks up the place a bit.
That would be my guess anyway....
