As long as you are not opening the freezer all the time. it should hold the cold well. I have just recently stopped breeding rats because they take so much time cleaning and caring which I just don't have the time anymore since my work schedule changed. I am feeding off my breeders and just buying from a local supplier. I think the cost is pretty equal when you consider the time spent! I was sending more time on the rats and not enough time enjoying my snakes! I would highly recommend frozen!