This sinks to Amazon Alexa or Google Home, so you can give it voice commands whenever something needs to get cleaned, stat. It uses Dirt Detect Sensors to figure out which areas of your home are more highly-trafficked, and cleans them more thoroughly. To learn more, read my colleague's full review on this must-have Roomba.
Promising review: "This product is revolutionary! I wanted one since it first came to the market, but they are not cheap, and I was not wholly convinced they could work. Well, I was wrong. This little robot goes under my furniture, climbs the threshold between rooms, does a fantastic job cleaning my many rugs. It makes a bit noise, but less than the standard vacuum. With the app, I can start it even when I'm not at home (or let it scheduled in advance) to come back to a clean home without experiencing the noise. Cleaning is fast and straightforward, and it works continuously for about two hours without recharging. Each recharge takes three hours." —Lu
Get it from Amazon for $229.99+ (available in three styles).