I would try to feed un-scented rat pinks first. They may take them right away and then you don't have to hassle with scenting. If they don't take them I would try scenting. Usually I just roll the feeder around in some bedding of the "scenters" and wipe off any stuck bedding. Or you can always try live rat pinks too them move to f/t.

Good luck. You have some cute carpets.