I've been using these boxes over 20 years. Literally have hundreds. Easily moved strong easily assembled/flattened. Great for storing books and papers. Hold shape and strength even when moderately damp. No signs of mold in any of the boxes.
I give this Staples store and employees five stars. The boxes for moving and storage are just right for the project I am working on. Many thanks! Lily at this store is most helpful kind considerate effective polite and professional!