Since I feed rats and mice, PK and FT, I select the mice that will be fed off that night and put them in plastic critter keepers, which I then place on top of the tanks. That way, the smell and sight are attractants. Have to do it this way with my young normal female BP or she doesn't even come out of her hide.

Since my ratters are both good eaters, though I'm trying to get my pickier female onto FT right now, I don't have to rat scent with them. They just take the food when it's offered. Once I have finally converted most of the snakes to rats, I'll start prescenting with rat.