Pile ups can occur in facilities due to increased prolificacy in sows creating an excess of weaned pigs, or the increased market weight of grow-finish pigs requiring extra space. Some of the management strategies used to avoid pile ups are reducing fill to fill intervals, disrupting all-in all-out flow, or increasing stocking density. All of these create problems of their own, so alternative strategies or ways to effectively use the previous strategies are needed. Some of the important aspects are to focus on nursery management, sorting by size in the nursery, feeding a diet based on size, and running trials to find the most effective strategies.