Businesses involved in the distribution of advertising materials deliver printed promotional items to households, businesses or people in public places. Materials may include leaflets, flyers, brochures, menus, catalogues, coupons and event notices. Distribution can take place door to door, by hand in designated locations, as inserts in newspapers or magazines, or through other agreed delivery routes. Services commonly include preparing and sorting materials, organising delivery by postcode or other area, and carrying out one-off or recurring campaigns. Some distributors can provide estimates of the number of items delivered and records of the areas or routes covered. Customers may supply the materials themselves, or arrange for printing and distribution together. The scope of a job depends on the type and quantity of material, the intended audience and the method of delivery.