I picked up an order of 24 total rats, 12 weaned and 12 smalls, last Wednesday (9/24). I went to pull a pack today (9/30) for feeding, and I discovered that they weren't completely frozen. My provider had been having a problem with his deep freezer, so they weren't completely frozen when I received them, but I thought they'd freeze in my own freezer, and they did not. Can I still feed them off? Should I contact my provider? They've definitely remained cold, but they aren't frozen solid, and that worries me.