I just put mine into brumation in the high 50s for 3 months. The females had been taking 3-4 adult mice a week. I gave them 2-3 weeks without food and then put them into brumation. This is optional but I'm aiming for higher fertility rates. Last year only four eggs were fertile. Two hatched after incubating at 82F. The babies took two unscented pinkies without hesitation.