The primary duties of a courtesy clerk revolve around putting groceries into a shopping bag and then into a shopping cart. Upon requests, courtesy clerk may take the groceries out to a customers motor vehicle or supply other forms of service. Some courtesy clerk in stores will do this unless the customer refuses and wishes to bring their own groceries out. Depending on the store, other duties may include cleaning the store, cleaning the bathrooms, collecting carts, sweeping the store, fixing and maintaining the bottle recycling machines, giving customer assistance, putting items customers initially intended to purchase but changed their mind about at the register back on the shelf (usually called "back shop", "returns", "go backs", "perishable returns", or even "call backs"), and reorganizing products on aisles to make a neater appearance .