The way you pack your storage unit is very important. You want your belongings to be in the same condition a year from now as the day they were packed away. Moisture permeates through the concrete floor of the unit: -keep cloth furniture off floor -keep mattresses and box springs off floor -lay a thin layer of plastic in floor of unit (about $7 at The Home Depot) Never stack anything on leather or upholstered furniture, it will leave a mark. Keep breakables away from walls of unit. The walls are thin; if you have active neighbors the boxes could fall.