Dirty-water detection was praised as impressive because it triggered extra cleaning behavior after dirty mop washing.
Pros: AI, Smart, App and Automation, Mopping performance
Cons: Docking and Auto-Empty Reliability (Robot), Hair‑Wrap / Tangle Resistance
The dirty-water sensing and remopping features were praised as useful when mop pads came back especially dirty.
Pros: AI, Smart, App and Automation, Overall opinion
Cons: Bin and Bag, Carpet — Medium-Pile Pickup
Dirty-water sensing was praised for triggering repeat mopping in dirty areas.
Pros: Obstacle Avoidance (Robot), Mopping performance
Cons: Controls and UI, Area Rug Handling
Dirty-water sensing and remopping were praised as useful automation for dirtier mopping jobs.
Pros: Price and Value, Value-for-money
Cons: Dried-On Stain Removal, Hair Pickup — Carpets
Dirty-water or dirt-sensing re-clean behavior was described as working, though evidence was limited.
Pros: Obstacle Avoidance (Robot), Suction and Airflow
Cons: Storage footprint and upright-stand stability, Aesthetic design and finish
Dirty-water detection was appreciated when it triggered or could trigger remopping, though one test did not activate it.
Pros: Mopping performance, Obstacle Avoidance (Robot)
Cons: Hair‑Wrap / Tangle Resistance, Bin and Bag
Dirty-water sensing and remopping were viewed as useful, with the Roborock’s one-pass remop behavior considered sufficient.
Pros: Overall opinion, Hair‑Wrap / Tangle Resistance
Cons: Obstacle Avoidance (Robot), Stuck resistance
The dirty-water sensor was viewed as a useful dock feature because it could detect dirty pad water and trigger additional cleaning.
Pros: Mopping performance, Edge and Baseboard Cleaning (Hard Floors)
Cons: Solution / Liquid system
Dirty-water sensing is praised as a useful advanced base-station feature that can trigger additional cleaning.
Pros: Obstacle Avoidance (Robot), Suction and Airflow
Cons: Price and Value
Dirty-water-driven automation was praised as useful through CleanGenius, which helps decide how much cleaning floors need.
Pros: Overall opinion, Mopping performance
Cons: Noise level, Dock noise
Dirty-water sensing and remopping are helpful when they trigger, but one review found automatic remopping failed on test stains.
Pros: Overall opinion, Corner Cleaning (Robot)
Cons: Obstacle Avoidance (Robot), Price and Value
Dirty-water/DirtSense evidence is qualified, with reviewers seeing it work in some ways but not always trigger extra cleaning when expected.
Pros: Mopping performance, Overall opinion
Cons: Bin and Bag, Obstacle Avoidance (Robot)