Windscreen cleaner is a job that involves the use of a WIPER, which is a device used to clean glass surfaces such as car windows. The WIPER is usually made of rubber or plastic and is attached to a handle. Windscreen cleaners use the WIPER to remove dirt, dust, and other debris from the surface of the glass. They may also use cleaning solutions to help remove stubborn stains. Windscreen cleaners must be careful to avoid scratching the glass while cleaning it.