Carton live storage is a gravity-fed order picking system designed to increase efficiency while decreasing required floor space. It delivers full carton and split carton picking, with low capital outlay and operating costs, and its more orderly picking system saves labour. Pickers work in the front aisle while replenishers work in the back. First in, first out rotation in any lane is ensured. In high-volume situations, a pick-and-put-to light increases speed, efficiency and accuracy.