I only use scent on acrylic jigs, i.e the ones such as aero jigs that don't have feathers. The scent will kill your marabou or schlappen action in the water, and it's especially deadly to the action of rabbit fur. Pretty much though I find I only use a dab on the head of acrylic jigs, about every 30 minutes when the water is nasty. If it's clear, I don't use scent at all. That's just me though. I think it just all comes down to personal preference. I know people that use scent on everything and catch fish, and I know people that don't ever use scent, and they catch just as many fish.