Do you need a mop-washing dock?

All-in-one docks cost hundreds more. Here’s who they’re worth it for.

By The Which RoboVac team · Oct 23, 2026

The biggest price jump in robot vacuums comes from the dock. A simple charger is cheap. An “all-in-one” dock that empties the robot, washes and dries the mop, and refills clean water adds hundreds of dollars. Is it worth it?

What a mop-washing dock does

Between rooms or after a run, the robot parks and the dock scrubs its mop pads, draining dirty water into a tank you empty. Roborock’s Saros 20 washes at 212°F,^[1] and iRobot’s Max 875 Combo pairs a roller mop with its AutoWash dock.^[3] Without one, you rinse pads yourself, which is quick if you mop weekly and a chore if you mop daily.

Carpet: the hidden issue

A wet mop dragging across a rug is a problem. Better robots lift the mop or detach it entirely. The Qrevo 2 Pro detaches its mops automatically, so it can mop the kitchen and vacuum the living room rug in one run.^[4]

Who should pay for it

• Lots of hard floor, mopped often: yes. The Qrevo 2 Pro is the value pick.^[4]
• Mostly carpet: no. Put the money toward a better vacuum and a self-empty dock, like the Q7 M5+.^[5]
• Small apartment: a basic combo robot like the Roomba 105 Combo may be enough.^[6]

Hidden costs

All-in-one docks need tank emptying, occasional descaling and replacement pads and bags. Budget for consumables.

Numbered citations link to the sources list on the guide page.