Oh mamas. I have a new chest freezer inside and an old freezer/fridge out in the garage. I've been putting the newer milk in the chest freezer inside and gradually bringing in the older stuff from outside as it's nearing it's 3 month mark. We were just out of town for a week and a fuse blew in the garage and everything in the older freezer is completely thawed. It's about 300 ounces. I have no idea when it blew so I don't know how long it's been thawed. It's definitely not safe to use. I'm thankful I still have the frozen milk in the new freezer inside, but I worked REALLY HARD for all that milk.