Will it fit under my low furniture?

At 3.1 inches tall, the robot slides under many couches, beds, and cabinets. The dock stands 18.5 inches tall, so plan for clear floor space near an outlet.

How does it keep the mop pads from smelling?

The dock auto-washes the pads with 212°F hot water and then air-dries them at 131°F. This combination keeps pads fresh between cleans and prevents musty odors.

Can it handle thresholds between rooms?

With an 88 mm obstacle clearance height, it crosses raised door sills and transitions that stop many robots. That makes it well suited to homes with varied flooring and thresholds.

Does it manage long hair without tangling?

Yes. It uses a dual rubber and bristle main brush with anti-tangle design, so pet fur and long hair are less likely to wrap around the roller.

Which voice assistants can control it?

It supports built-in voice control plus Amazon Alexa, Google Assistant, and Apple. You can also set no-go zones and store multi-level maps through the app.

How often will I need to empty the onboard bin?

The dock automatically empties the robot's 228 mL dust box for you, so day-to-day emptying is handled. You mainly tend to the dock's larger tanks over time.

Top 9% overall

Roborock Saros 20 Sonic

Name: Roborock Saros 20 Sonic
Brand: Roborock

A near hands-off cleaner with elite navigation and 36,000 Pa suction for busy multi-story homes.

Currently unavailable

9.2

At a glance

The highlights

Our Rating

9.2/10

Excellent

Cleaning9.1

Navigation9.3

Features9.5

Value5.5

36,000Pa

Stronger than 98% of robots

Completely hands-free

Empties its own dustWashes its mopDries its mopRefills its waterDrains dirty waterAdds detergentCleans its dock

Vibrating mop pad

Self-washing, extends to edges

LiDAR navigation

LiDAR mapping · AI camera obstacle avoidance

Extends & lifts

Better edge & corner reach

Dual (rubber & bristle)

Anti-tangle design

The good

Pros

36,000 Pa of suction lifts embedded dirt and pet hair from carpet.
Ranks in the top 1% for cleaning among rated robot vacuums.
Dual-sensor navigation with LiDAR, RGB camera, and side laser dodges obstacles reliably.
The dock washes mop pads with 212°F water and auto-dries them.
Fully self-maintaining: empties dust, refills water, and cleans itself.
Extendable side brush and mop reach deep into corners and along baseboards.

The trade-offs

Cons

Vibrating mop pads scrub less aggressively than dual-spinning systems on stuck-on messes.
Value rating trails its cleaning and feature strengths.
One-year warranty is shorter than some premium rivals offer.

How the numbers stack up

Performance vs the category

Suction of 36,000 Pa is among the strongest we track, ahead of about 98% of robots (category median 15,000 Pa).
Runtime comes in at 190 min, about average for the robots we track (category median 200 min).
At 1,225 sq ft, single-run coverage is below the typical robot (median 2,097.5 sq ft).
Threshold clearance of 88 mm is higher than roughly 96% of the robots we track (category median 20 mm).
Mop pressure of 14 N is firmer than the typical robot (category median 10.5 N).

Who it's for

Busy households with mostly hard floors across several levels who want a truly hands-off machine. A great fit for pet owners and anyone who wants strong navigation without babysitting the robot.

Who should skip it

Anyone who mops up thick, dried-on spills daily and wants the deepest scrubbing action, since spinning mop systems tackle stubborn grime more forcefully than these vibrating pads.

The bottom line

Our take

The Saros 20 Sonic delivers top-tier suction, excellent navigation, and a dock that handles nearly every maintenance chore for you. It suits multi-story homes that prize convenience and thorough hard floor care. The vibrating mop is the one area where a spinning system would do better.

Questions

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Every detail

Full specifications

Specifications

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