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A full station washes the mop pad, dries it with warm air, empties the dustbin into a sealed bag and refills the robot's water tank. Cheaper docks do one or two of those. Heated drying is the one that matters most day to day, because it is what stops the pad going musty.
The dock is the reason people actually use the mop. Washing a pad by hand after every run is the job that quietly stops happening in week three, and once it stops the mop is worse than nothing because it is spreading rather than lifting.
The four jobs
What each dock does, in the maker's own words
23 of 23 models publish this figure. Every number below links to the page it came from.
Compiled from the manufacturers’ own published material on 2026-09-01. We have not measured any of these figures ourselves — see how we pick. Found an error? Tell us and we will correct it.
Washing, and the temperature
Hot water lifts grease in a way cold water does not, which matters because kitchen floors are where most of the mopping happens. ECOVACS states 167F on the X8 Pro Omni, Dreame states 158F on the X40 Ultra and 149F on the L40 Ultra. Roborock states hot water washing on the Curv line without publishing a temperature. Where a dock washes in cold water, the pad comes out rinsed rather than clean.
Drying, which is the underrated one
A washed pad left damp in an enclosed plastic housing grows the same bacteria that make a forgotten dishcloth smell, and it takes a few days in a humid house. Warm-air drying prevents it. A dock that washes but does not dry will produce a musty pad, and no amount of washing fixes it once it has started — see why the mop smells musty.
Emptying
Intervals of 60 to 100 days are quoted. Dreame states 100 days on a 3.2L bag for the X50 Ultra. Halve any of those figures in a house with a shedding animal — the reasoning is on self-emptying versus a manual bin.
Refilling and dosing
On-board water tanks are small: eufy states 80ml in the robot against a 3L tank in the station. On any floor larger than a flat, the refill is what allows the run to finish. Automatic solution dosing, which ECOVACS states on the X8 Pro Omni, also removes the most common way people damage a mop pump — putting household floor cleaner in a tank designed for water.
How we picked
Criteria first, products second. These are the things we ranked on, stated before anything is recommended.
Whether the dock washes the pad at all, and at what stated temperature.
Whether it dries the pad with warm air, which is what prevents the musty smell.
Self-empty interval and bag capacity, where the maker publishes them.
Whether it refills the robot's tank and doses solution automatically.
Physical footprint, because a station is a piece of furniture and people underestimate it.
What we did not do: test any of these machines. We do not own one, we do not have a lab, and nothing on this page is written as though we did. The full method.
Quick picks
Ranked on the published specifications below. Tap a row to jump to the full write-up.
#
Product
Best for
Mop lift
Price
1
ECOVACSNo photo
ECOVACS DEEBOT X8 PRO OMNIA rotating roller mop that washes itself continuously while it cleans, instead of pushing one increasingly dirty pad around the house.
Roborock Qrevo CurvXThe highest published suction figure here paired with the highest published mop lift, which is the combination a mixed-floor home actually needs.
Its base self-empties, and for a vacuum that is enough. It does not wash the pad and it does not dry it, which on this page is the whole point. If you are shopping for a self-cleaning dock, this is a self-emptying dock with a mop attached and it should be compared against cheaper vacuum-only robots instead.
Questions people actually ask
+ What does a self-cleaning dock actually do?
Up to four things: washes the mop pad, dries it with warm air, empties the dustbin into a bag, and refills the robot's water tank. Cheaper docks do fewer. Check which of the four you are actually buying.
+ Is hot water mop washing worth it?
On kitchen floors, yes — hot water lifts grease that cold water leaves behind. Stated temperatures range from 149F to 167F on the models that publish one, and several publish none.
+ Do I still need to clean the dock?
Yes. The wash tray collects the material the pad gives up, and it needs rinsing periodically — weekly is realistic in a busy house. A dock that cleans the robot does not clean itself.
+ How big is a robot vacuum dock?
A full washing station is roughly the size of a small bin and needs clearance on three sides. Measure the spot before you buy; it is the most common regret and the easiest to prevent.
