You can try to warm up the frozen mouse(warm water) and dip it in chicken noodle soup. Also sometimes moving it around like its alive entices them to attack and eat. Proper lights and heat matter too. If they are too cold they have no desire to eat.
I would say petco or pet smart and they are frozen but u can defrost them.
There's a feed store down on 162nd next to the US Bank. They can hook u up.
Thanks! Your answer is awaiting moderation.