Depends on the feeders. I would only be concerned with large crickets that may see your cham as a food source . Most other feeders are fine to leave in at night. I generally have some carrots and greens in the feeder cup so they will be fine. (Can't think of any other feeders I'd be concerned about.)I agree with the last post! As he said the Cham will eat when he want to but should still be offered earlier in the day to help with digestion. Would it not be a good idea to take the food out at a percific time before lights out? If so what time would you suggest is a good time befor lights out?