We ship all of our products frozen in recyclable green cell foam insulated boxes with dry ice and ice packs. We limit our boxes to 25 pounds, so that we can ensure that there is enough room to fit dry ice and ice packs in your order. Everything will be sent out frozen and tightly packed. If any of your products arrive partially thawed or starting to defrost, this is perfectly fine and safe! It is perfectly safe to thaw and re-freeze pet food.