Due to the competitive environment among companies, the demands for cost reduction and greater added value for the customer are increasing. Therefore, effective supply chain management is extremely necessary. An essential component of this chain is the inventory, which has, among other features, the role of fulfilling the demand to the final customer. In order to support this, buildings are designed for positioning and handling inventories; they re called warehouses or distribution centers and are present throughout the customer supply chain. These facilities have dynamic activity, especially the picking operation, which corresponds for 50 percent to 75 percent of the warehouse s operating costs. Picking is the process of collecting the items needed to fulfill customer orders from their storage locations. This operation has been greatly impacted by recent retail trends due to increasingly complex demand, a greater variety of items and less frequency of replacement. An example of this model, little explored in the literature, is the supply of convenience stores. Based on this lack of studies, this work intends to develop a guide for evaluating warehouses aimed at supplying convenience stores. To this end, a scope review of the picking operation and a case study covering three warehouses of two Brazilian companies were prepared in order to demonstrate their main similarities and differences.