My jerkface pastel female Rhea was off feed for almost 6 months. I tried every form and size of mice and rats during that time. Nothing. Finally, last week I rearranged her whole living situation, moved her from near the top of my rack to the very bottom, her new tub is MUCH tighter than the old one, so it has higher humidity, but it has a slightly lower temp being at the bottom, and I switched her from aspen back to paper towels, and gave her a whole new hide. Finally, she took a mouse last week, and she took two mice yesterday. I had tried mice before, but apparently she felt like she needed a change of scenery.