Don't know anything about the liver oil but I use Spike It, Garlic Oil. I swear by the stuff. I friend of mine last summer started fishing with me and we were throwing jigs. Asked him if he wanted some a he said "naw". After I boated six fish without him catching anything he decided he might try it. The downside is you need to eat before going fishing because the stuff will make you hungry for spaghetti. Gets me every time! Scent is not a cure all but it definetly a piece of the puzzle. If your not using it, whatever the scent...you should be.