I got my second nuk home yesterday. They came home in a cardboard box. The hottest day of the summer 96 degrees and had to stay in a cardboard box. What a miserable start they had. Box has vent holes on each end but I am sure it was hard on them. Took the plug out when we got home and they came out boiling. Saw them drag one fatality out. Hope to put them in a regular hive soon.