Cleaning contractors provide cleaning services for homes, workplaces and other premises, usually under an agreed schedule or contract. Depending on the client and setting, work may include dusting, vacuuming, mopping floors, cleaning kitchens and washrooms, wiping surfaces, emptying bins and replenishing items such as soap and paper towels. Contractors may work in offices, shops, schools, communal areas, warehouses and residential properties. Some businesses also offer specialist or one-off cleaning, including deep cleans, carpet and upholstery cleaning, window cleaning, builders' cleans and end-of-tenancy cleaning. The scope of work can vary according to the type of premises and its requirements. Contractors typically supply trained staff and cleaning equipment, and may provide cleaning products, arrange access and set out procedures for handling waste. Customers can expect agreed tasks, timings and standards to be recorded in a service specification or cleaning schedule.