I ordered 10 of the 64oz. Refills from Cleanitsupply and one of the shipping boxes held 6 of the bottles. The box was not nearly strong enough, nor did it provide separators for the bottles to prevent damage. One of the bottles was damaged and spilled it's contents in the box. I have ordered 6 bottles numerous times from different vendors and over half of the deliveries were damaged spilling different amounts of the cleaner. I had hoped that Cleanitsupply would ship in stronger boxes with protective separators, but they did not with typical shipping damage.