Powered by Physics: The hot tub vacuum is no hose to hook up, or batteries to forget to charge, or other hook ups to drag around for just a little sand. Just a few pulls on the plunger, picks up small pebbles and debris from the bottom of the spa. Easy to Operate: Plug the top cover hole with your thumb and insert the spa vac into the spa. The water pressure pushing the debris into the vacuum and then you pull it out and the debris is trapped, to be removed from the vacuum later. Spot Clean: Its narrow mouth reaches into corners a pool broom or vac cannot fit to spot clean/vacuum. Because particles tend to condense in few spots, handheld hot tub vacuum is easy to be precise and suction the related areas.