We just noticed this was happening when I updated her notebook with her shed last week. We buy the f/t rats singly (or similar sized mice, depending on availability) and we try to offer them, and she took some but not all – we just noticed the pattern that it was only the f/t mice (not consecutive feedings) she was accepting. We try to feed her once a week, but if she refused the f/t we would wait 3 days and try again. If she refused that one, then just get her a live one so she would eat to keep her weight right.
Never tried “scenting”, I am not even sure how to go about that, but definitely willing to give it a go! Once we can get her on f/t rats, I will start buying in bulk.