Containers with reinforced bottom panels, methods of making containers with reinforced bottom panels, and methods of using containers with reinforced bottom panels. The containers with reinforced bottom panels have one or more bottom panels, one or more pleats folded along a center line at an angle of about 180°, two side panels, two end panels, and two pairs of side panel extensions. The pleats provide extra strength to the bottom panels of the containers, thereby reducing or eliminating sag in the bottom panels of such containers, particularly when high-water content goods are placed in such containers or when such containers are stored or used in a high-humidity environment.