I use salt, Sea Salt in large quantities to keep the bait fresh,

This works really well with shad I catch in my cast net, don't be afraid to go heavy on the salt, it makes a big difference in how well the bait holds up.

I agree with Kkeltic vacuum sealing provides the best results.

fairst put some water in a air tight box and put salt seasalt works best and put water in the container then let the salt desolve the more salt the better and put ure bait in a zipper bag and pop it in close the lid and keep in a cool place a freezer works best. bon chance1