iRobot Roomba Combo j9+ Self-Emptying Robot Vacuum and Mop with Auto-Fill Dock

No. When the robot detects carpet, the arm lifts the whole pad up onto the top of the body rather than raising it a few millimetres. That is the difference between the Combo j9+ and cheaper vac-and-mop robots that need carpet no-go zones.

The sealed bag in the dock holds roughly sixty days of debris and the dock's reservoir refills the mop tank for about thirty days. Beyond that you rinse or replace the mop pad and clear hair from the brushes as normal.

Plain water, or iRobot's own cleaning solution added to the dock reservoir. Do not use vinegar, dish soap or floor cleaner concentrate, as they foam and clog the pump and the pad.

The Clean button on the robot starts a full job on its own, but mapping, room-by-room cleaning, schedules and keep-out zones all live in the iRobot Home app over 2.4 GHz Wi-Fi.

Obstacle recognition is trained to spot and avoid solid pet waste, and iRobot backs that with a replacement guarantee for the first year if the robot runs through it anyway.