I cannot explain the differences except state what hapened to us. There are however diferent types of cardboard boxes...Shipping boxes are the heaviest guage, followed by moving boxes. I did not mean to imply the boxes fall apart in 1-2 years, but you can certainly feel the moisture (dampness) they retain from the heat and most likely would eventually attract insects,mold or whatever else comes along. IMO, better to avoid this situation simply by using heavy guage storage containers that you can close.
|