This little robot window-cleaner is the best labor-saving device I've ever used, and it's going cheap at Amazon right now

(Image credit: Future) Hate cleaning windows? Me too, which is why Winbot cleaning robots are some of my all-time favorite smart home gadgets. These bots use strong suction to grip your windows, and roll across the surface on soft rubber treads. They spray a fine must of cleaning solution onto the glass in a fine mist, then buff away dirt using a microfiber cloth. They're very effective, capable of removing even stubborn grime, and better yet, they're going cheap in Amazon's Labor Day sale.I've used two Winbot robot window cleaners, each of which suits a different type of home. The Ecovacs Winbot Mini 2 is now $189 at Amazon (was $239.99), and is ideal for apartments. Its compact design means it has a much smaller turning circle than most robot window cleaners, and it fits easily onto narrow panels.The Ecovacs Winbot W2 Pro Omni, which is now $399 (was $499.99), is great choice for larger homes. It comes with a rechargeable power pack that you can carry around indoors and out, so the robot itself doesn't have to be plugged in while it works.I was surprised to find there's also a $100 discount on the Ecovacs Winbot WS2 Pro Omni, which is now $499.99 (was $599.99). This model launched at the IFA tech show in Berlin this week, and has three spray nozzles per side rather than the usual two for more even coverage when pre-treating the window, and fewer passes with the microfiber cloth afterwards for faster cleaning.Today's best Winbot dealsShop more of today's best Labor Day salesAmazon: 45% off TVs, AirPods, air fryers & vacuumsApple: iPads, AirPods & MacBooks from $99Appliances: up to $1,200 at SamsungBest Buy: 60% off appliances, TVs, laptops & moreCasper: up to 30% off mattressesDell: laptop deals from $249.99DreamCloud: up to 60% off mattresses, 66% off bundlesHome Depot: 40% off appliances, furniture, grills & toolsLowe's: $1,000 off appliances, patio & toolsNectar: up to 50% off mattresses, deals from $349Saatva: up to $625 off luxury mattressesSamsung: up to $2,000 off 4K, QLED & OLED TVsTarget: 45% off clothing, tech & furnitureWalmart: 58% off back-to-school, furniture, & clothing Sign up for breaking news, reviews, opinion, top tech deals, and more. Cat is TechRadar's Homes Editor, covering smart home tech, kitchen appliances, vacuums, haircare and more. She's been a tech journalist for 15 years, having worked on print magazines including PC Plus and PC Format, and is a Speciality Coffee Association (SCA) certified barista. Whether you want to invest in some smart lights, find your ideal hair styler, or pick the espresso machine of your dreams, she's the right person to help.