Suction-side cleaners are automatic pool cleaning devices that use the suction created by a pool's filtration system to remove dirt and debris from the pool floor and walls. They are typically connected to the pool's skimmer or dedicated suction line, allowing them to move around the pool while collecting leaves, dirt, and other particles. These cleaners are generally easy to install and operate, making them a popular choice for pool owners. They work best in in-ground pools and can be used with various pool surfaces, including vinyl, fiberglass, and concrete. Regular use of suction-side cleaners helps maintain a clean and healthy swimming environment.