Are we talking babies or adults? And how many days away? With my adults I generally just make sure they are watered well and they are good for about a week. With babies I soke them good and then leave them with optuna cactis and they are good for a few days provided the lights and heaters are set up auto if I need to be more then a few days with babies I look for someone to stop in and soke and feed them a time or two