The Hayward TigerShark Robotic Cleaner completely cleans the pool floor, walls, coves, and waterline in just 4 hours. The on-board pump, that runs separately from the pool's filtration system, provides intense vacuum power and superior debris pickup. With its simple filter cartridge, emptying the robotic cleaner is easy - simply open the cleaner, remove the cartridge, and rinse with a hose.