Spot Cleaning: The spa vacuum for hot tub makes it easy to spot clean around the corners of uneven hot tub/small pool steps, keeping the jacuzzi free of debris. Use it when you see debris on the spa bottom. Easy To Use: Insert the spa vac into the SPA after plugging the top round hole with your thumb. Once aligned with the target, release your thumb to suction. After lifting vertically, clear water flows out and the target is trapped in the reservoir. Small Area Cleaning Tools: Hot tub vacuum cordless are suitable for cleaning small areas, like hot tubs, spas, small pools and more.