The Hobot 298 Window Cleaning Robot will make sure you never have smudged glass again. If your pet often leaves wet nose marks on your sliding glass door, this house-cleaning robot can erase them. And if you own a business with large, customer-facing windows, this cleaning robot will make sure they’re clean. The Hobot 298 sprays cleaner—or just water—on your window to wash away any impurities. And no matter how thick your glass is, this robot will take care of it. It can even clean a square meter in just two and a half minutes. The best part is that you don’t have to keep an eye on it. This robot cleaning device keeps track of where it’s cleaned on your window, and it knows when to stop.