This smartphone-controlled vacuum is an amazing addition to you home, especially at this sale price. If you make a purchase by clicking one of our links, we may earn a small share of the revenue. However, our picks and opinions are independent from USA Today's newsroom and any business incentives. Nothing gets us excited quite like a good robot vacuum sale, and there's one that started today youdon't want to miss. Ecovacs makes a smart robot vacuum called the Deebot N79S that works with a smartphone app as well as with Alexa and Google Home.