
The iRobot Roomba Combo j7+ is a robotic hoover that mops your floors and empties its own bin when full. Other mopping robo-hoovers exist, but most need some help from a human to manually switch between modes and swap out their mopping attachments. However, the Combo j7+ is completely automatic and uses a fully retractable mopping pad, which it safely stows away when not in use to avoid getting your carpets damp.
The two-in-one Roomba uses sensors to know when it’s on a hard floor and when it’s on a carpet or a rug, and then chooses the right moment to automatically deploy its special mopping arm, popping it out from a little compartment on the top of the device, like it’s doffing a little wet hat.