Sanitizing surfaces comprising a sanitization device including a mobile body； and extending the sanitization device (102) laterally from the mobile body across a surface. A source of UV radiation (104) is mounted on the sanitization device. The sanitization device moves across the surface； exposing the surface to UV radiation produced by the source； directing a source of UV radiation to the surface at a predetermined dosage while the device moves over surface. Moving and locating the sanitization device can be inwardly and outwardly relative to the mobile body to extend at different angles being from a horizontal angle relative to the mobile body to a non-horizontal angle relative to the mobile body and to effect sanitization when so extended. The device is operable upwardly and downwardly across the surface while effecting the sanitation.
