A cleanout is an access point in a plumbing system that allows for easy cleaning and maintenance of pipes. It is typically a vertical pipe fitted with a removable cap, enabling plumbers to clear blockages or inspect the drainage system. Cleanouts are strategically placed at key locations, such as bends or junctions, to facilitate effective maintenance. In residential plumbing, cleanouts are often found in basements, crawl spaces, or outside the home. They help prevent costly repairs by allowing for quick access to the drainage system. Regular maintenance of cleanouts can ensure that the plumbing system remains clear and functional, reducing the risk of clogs and backups.