iRobot Roomba Combo j9+ Self-Emptying & Auto-Fill Robot Vacuum

It's mixed. Some Roomba Combo j9+ units rarely get stuck and dock every time, while others often miss the dock, stall partway through a run or keep bumping into baseboards. There's no telling which you'll get, so watch the first few runs closely and report a robot that won't dock while it's under warranty.

Hardware failure is a recurring complaint. On some Roomba Combo j9+ units the mop arm or the auto-fill system stops working within months, so the robot quits mopping or refilling and needs warranty service. If mopping is the main reason you want this robot, weigh that risk before buying.

It's light upkeep, not a scrub. The Roomba Combo j9+ keeps dust down on hard floors between proper cleans, but it can leave streaks and often misses stuck-on dirt. Think of it as a daily wipe and keep a regular mop for spills that have dried.

Yes. Vacuuming is the strong side of the Roomba Combo j9+, and it handles pet hair well, especially on hardwood. It may be a little weaker on tight low-pile carpet, so expect the best results on hard floors. The Clean Base empties the bin for you, so you aren't tipping out fur by hand.

Mostly. The Roomba Combo j9+ maps a home quickly, and the app makes it easy to schedule cleans room by room. Some units start throwing glitches and error messages after a while, though, so it isn't always hands-off over the long run.

It lifts it out of the way. The Auto-Retract Mopping System raises the pad onto the top of the robot when it detects carpet, so rugs stay dry while it moves between hard floors and carpeted rooms.