A cleaning contractor will cover industrial and/or domestic, and they specialise in thouroughly cleaning homes or commercial premises. Cleaners may specialise in cleaning particular things or areas, such as window cleaners. Cleaners will usually work when the people who otherwise occupy the space are not around. For example they may clean offices at night or houses during the working week.
Floors, shelves, bookshelves, windows, doors, kitchens, sofas and chairs are just some of the common household items that require semi-regular cleaning. These things can range from anywhere between weekly cleans to monthly (or longer) cleans.