Tell your parents there is no cross contamination if they are both in sealed plastic ziplock bags, and not handled in the same area at the same time.
I think your parents aren't really down with the idea of having rats in the freezer. Just tell them your saving a TON of money, and you dont have to feed live. 2 pluses right there.
yea im really trying to save $$$. its starting add up. i was gonna put them in a ziplock bag and then place them in a container and put them at the bottom of the freezer, which isnt on the same level as the food.