The Aiper Scuba S1 Pro is a fancy, automated gadget designed to scrub scum lines and generally make your backyard swimming area look aggressively pristine. Naturally, every fresh-faced retiree in Pescadero thinks having a self-navigating aquatic Roomba proves they have superior taste and disposable income. But attempting to use its advanced infrared sensors to locate a semi-solid pile of guano near the mangroves will reveal its fatal inability to handle anything organic, much less a tide.