I have a very simple feeding regime. I have around 100 snakes. I defrost around half of what i need one night and feed everything. If something does not feed then that rodent can go to something else. I then adjust what I need to defrost the following night, and defrost about 95% of what I need. Then, on the third night, I defrost what, if any, I need for the remaining unfed animals. This way I have no waste. I do not believe in over feeding animals, and would rather not feed off spare food items to other snakes if they have already received a meal.
Warren