Roborock Saros 20 robot vacuum and its gray dock

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Roborock Saros 20 review: the step climber with a pet-waste problem

Verdict

Swept's call: the Roborock Saros 20 is worth buying for a house with tall steps between rooms and pets that never have accidents indoors. It climbs higher than Roborock promises but can't be trusted around pet waste.

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By David King, EditorUpdated November 5, 2026

Roborock undersells how high the Saros 20 climbs and oversells what its camera sees. Its box claims it can mount a 1.8 in (45 mm) sill. The Hook Up saw it go up and back down a 2 in (50 mm) sill. Vacuum Wars, which keeps adding height until a robot gives up, got it over a single step of 2.2 in (57 mm). The box also promises a camera that knows more than 300 kinds of object. Yet three separate testers put fake dog poop in its path, and none could trust it to steer clear. It's quiet and shrugs off long hair. Its maker has put an end date, March 2028, on its security patches. Swept's call: the Saros 20 is worth buying for a house with steps between rooms. The pets must never have accidents indoors.

Roborock Saros 20under $1,600 Check price on Amazon

BuyBest for tall steps between rooms

Roborock Saros 20: the robot for a house with steps in it

Price band: under $1,600

A family and their dog on a sofa while the Saros 20 cleans the rug

The Saros 20 cleaning a kitchen floor as a family gathers at the counter

Roborock's illustration of the Saros 20 raising its body to climb a step

The Saros 20 is a robot and a big dock. The dock empties its bin, scrubs and dries the pair of spinning mop pads and tops up its own tank. Its party trick is a chassis that hoists itself over door sills. The pads also drop off in the dock, so it can vacuum a rug without wetting it. At 3.14 in tall, it slid under a 3.1 in (8.0 cm) gap at RTINGS. The box leads with 36,000 Pa of suction, the robot vacuum's version of quoting a car's top speed for the school run. What came off the floor matters more.

Which Saros 20 am I buying?

Roborock sells several robots with "Saros 20" or its headline specs in the name, and reviews blur them. This review covers the plain US Saros 20: robot RRE0CPS with dock EWFD42LRR, according to the manual on Roborock's US store page. It mops with two spinning pads that detach in the dock. Results from its siblings don't count here.

Robot	How it mops	Is it this review?
Saros 20	Two spinning pads that drop off in the dock	Yes
Saros 20 Sonic	One vibrating pad, and a different obstacle sensor	No
Saros 20 Flow	A roller mop	No
Qrevo Edge 3 Pro	Shares the lift chassis, suction claim and camera name	No

One correction could cost you money. Some reviews of "the Saros 20" describe a self-cleaning roller mop; that's the Flow. If the listing adds a word after "Saros 20", or the photos show a roller, it's a different robot. The plain Saros 20 with spinning pads is the one we'd buy for a house with steps.

Will it climb the step into the sunken den?

Yes, comfortably, and climbing is the reason to own one. Roborock quotes 1.8 in for a single step and saves its taller figure for two stacked steps. That's the honest way round. Every test beat the claim or ran out of test. Vacuum Wars got it over 2.2 in after a little repositioning. The Hook Up watched it cross 2 in up and down. A reviewer three months in reports it reliably reaching a porch over a step of about 2 in (52 mm). RTINGS stopped at 1.5 in (38 mm), the top of its test, and found it may need the threshold marked in the app.

That's the sunken living room, the sliding-door track and the porch lip, without you carrying it. I've read a lot of supplier spec sheets, and the ones that undersell are rare enough to frame.

Will it drive through dog poop?

Assume it will. RTINGS concluded the camera can't be trusted around pet waste. On The Hook Up's course it rolled over the fake poop as if it were a doormat. Neither of the two robots George Langabeer tested avoided it once. Roborock says the camera recognizes your pets. On this evidence, it doesn't recognize what they leave behind.

It copes better with ordinary clutter on bare floors, dodging 17 of 24 objects at Vacuum Wars. On carpet it's much worse. Testers also saw avoidance switch off while it repositions and heads home. RTINGS found it so wary of dining chairs that it skips under the table, which leaves the crumbs exactly where the crumbs live.

Every test of both, side by side:

Tester (date)	Tallest single step	Pet waste and obstacles
Vacuum Wars (review read Oct 2026)	2.2 in (57 mm), after repositioning	17 of 24 objects on its course; no separate poop result
The Hook Up (Apr 2026)	2 in (50 mm), both directions	3 of 6 points; ran over the fake poop, nudged shoes
RTINGS (Jul 2026)	1.5 in (38 mm), the top of its test	Not reliable around pet waste; much worse on carpet
George Langabeer (Apr and May 2026, two robots)	Not tested	Neither robot ever avoided the fake poop
ModernDayTech (Jun 2026, three months)	Porch step of about 2 in (52 mm)	Avoidance seemed off heading back to the dock

Roborock blamed one of Langabeer's robots on beta firmware, and RTINGS suspects software. So an update could fix it, but nobody has shown one has. A retest on current firmware that steers around fake poop would change our call. Until then, treat it as a robot for a floor you trust.

What is it like to live with?

Mostly pleasant. Long hair doesn't wrap the brush. Nothing wound around it in Vacuum Wars' long-hair tangle test, and Just A Dad Approved needed no scissors in 90 days of daily runs with a shedding dog. It lifts pet hair from rugs well: most of it in one pass at RTINGS, 88% at Vacuum Wars. The possible weak spot is very short, dense carpet, where one cat owner found hair left behind; Tom's Guide also saw it leave more hair on its own rug than on hardwood. Grit buried in carpet comes up well too.

The bin is small, about 9 fl oz (260 mL), and RTINGS found it fills faster than advertised. The robot is impressively quiet, though the dock roars for a few seconds when it empties. Mopping is decent rather than special. On a big single floor, plan for a recharge stop. One owner with four cats ran short of battery and clean water on a large downstairs.

Two setup notes. Just A Dad Approved spent about 20 minutes redrawing carpets its first map got wrong, and the pads then dropped off reliably. Two owners with a three-level house start vacuum-only jobs at the dock so the pads come off, then carry the paused robot upstairs.

Will it still get updates, and is it banned?

It isn't banned. Its FCC ID was filed in December 2025, before the FCC's robot listing, and robots already on sale stay legal to buy and use. Our guide to which robot vacuums are banned explains the rule. That guide also lands on this same robot for homes with house-trained pets that want security fixes for years and a way to run it off the internet. Roborock runs security support for this model to 1 March 2028. The FCC lets updates continue to at least 2029 but doesn't require them. The warranty is 1 year, and nobody has reported on the robot past three months.

It has a camera and microphones. Roborock's brand-wide privacy page says nothing is recorded and both can be turned off. The manual says holding Reset until the voice message switches Wi-Fi off 5 minutes later. The buttons still start a clean, spot-clean and send it home. The Hook Up kept it working in Apple Home with the internet blocked for 3 days. For some households, any lens rolling past the bedroom door is a dealbreaker. If that's yours, and your shedder is house-trained on hard floors with low rugs, our pet-hair roundup names the camera-free eufy Omni C28.

Should you buy the Saros 20?

Yes, if your house has a step that strands other robots and your pets go outside. It out-climbs its maker's promise, doesn't tangle and is supported into 2028. The catch is pet waste, and it's a real one. If there's ever mess on your floor, this robot will find it with its wheels. For a house with steps and house-trained pets, we'd buy it.

If your pet has accidents, sheds hard on carpet, or your doorways are flat

Then this isn't your robot. Our roundup of robots that steer around dog poop skips the Saros 20 for exactly this reason. If your house has tall steps and a pet that sometimes goes indoors, that roundup names Dreame's X60 Max Ultra Complete, which handles both. Without the tall steps, on mostly hard floors with rugs, it picks the eufy Omni S2 for a puppy or an accident-prone pet. If the accidents come with a heavy shedder on carpet or rugs, our pet-hair roundup also sends you to the X60.

Steps are what justify the Saros 20, so a house without them changes the answer. Picture a carpeted home with house-trained pets, where no doorway sill rises as high as an inch. For that home, the pet-hair roundup's cheaper answer is the Dreame L60 Ultra PE.

Roborock's own avoidance specialist, the Saros 10R, was consistent around pet waste at RTINGS, but its pet-hair results are contested. Our Saros 10R review, the pet-hair roundup and the dog-poop roundup all say wait on it, even for a light shedder on hard floors with low thresholds. Our comparison of the Saros 20 and Dreame X60 shows where each one wins. The home-fit finder sorts out everything else.

BuyBest for tall steps between rooms

The bottom line

The Saros 20 is the robot for a house built on more than one level, with pets who know where the yard is. Roborock promised a climber and delivered a better one. It promised eyes and delivered a pair that miss the one thing dog owners dread. If your floors never hold that surprise, it's the easiest step climber to live with.

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The evidence in full

25 sources

Identity. Roborock's US store page links the "Roborock Saros 20 Series" FCC user manual, which names robot RRE0CPS and Empty Wash Fill Dock EWFD42LRR (60 Hz). fccid.io lists FCC IDs 2AN2O-RRE0CPS01/02, applications dated 2025-12-16, matched by model code; the label photo was not checked. RTINGS lists one variant, black. Owners in the threads used here didn't state their country.

Vacuum Wars (bought its robot; review read 26 Oct 2026, publication date not stated). Single-threshold test on smooth wood, adding strips until failure: 57 mm after repositioning. Pet hair: medium-length pet hair flattened into carpet, then two consecutive runs with the leftover weighed: 88%, above that lab's average. Its long-hair tangle test: 0%. Embedded sand in medium pile: 89%, above average. Obstacles: 17 of 24 at maximum sensitivity, one above average; the course is mostly non-waste objects on bare floor. Dried stains: 116 points, against that review's average of 94. Water left behind: 0.8 g, a touch under that review's average (the compare page lists a lower figure). Mop lift over carpet: 20 mm. Airflow 15 CFM. Bench suction: 0.41 kPa in the written review, 0.82 kPa on the compare page, unresolved, possibly a retest. Battery: 1.44 min/%, a pace over part of the battery rather than a rundown, which projects to a little under two and a half hours of running and to below-average coverage per charge. Bin 260 mL. The compare page lists a HEPA filter; RTINGS says there isn't one.

RTINGS (retail robot, Jul 2026). Threshold 38 mm, the top of its test; thresholds may need marking in the app and a few attempts. Clears 8.0 cm (3.1 in). Synthetic pet hair pressed into low pile, one default pass: good, most hair lifted, with Adaptive Lift on; a step up from the Saros 10R, though RTINGS staff rate twin-roller S8 models better on carpet hair. Obstacle course, three filmed runs: "disappointing", fine on bare floor, much worse on carpet, inactive while repositioning. RTINGS judged its pet-waste avoidance unreliable and puts the regression against the 10R down to software, most likely. Flags dining chairs as easily trapped and skips under the table unless avoidance is turned off. Displaces tassel rugs. Stains "not very impressive", stain detection doesn't add passes. No HEPA, not well sealed. Very quiet; dock loud for a few seconds. Battery life called incredible, a different method from Vacuum Wars' coverage estimate. Bin fills faster than advertised and suction stops before full. Mop wash: Roborock claims 212 °F; RTINGS' review lists 176 °F; unresolved. Measured decibels are locked.

The Hook Up (Apr 2026; auto-captions garble the model name, identified by its 36,000 Pa claim). Crossed 50 mm both directions. Obstacle test 3 of 6: ran over the fake poop, nudged shoes. On high-pile carpet strewn with a dry mix of household debris and run twice at top suction, it collected 62.8%, slightly behind the reviewer's previous Roborock. Corner vacuuming 6 of 8, corner mopping 6 of 10. Dried mud only slightly better than an older robot. With pads left on, no spinning-pad robot lifted high enough to avoid dragging on its carpet; the pads can stay at the dock. Matter via HomeKit stayed controllable with internet blocked for 3 days, room selection included, "almost all" of seven commands working. Overall: "average or slightly above average" for the price.

Tom's Guide (US tester, 29 Mar 2026). One vacuum-only run: 70% pet hair on the reviewer's rug, 90% on hardwood, "left quite a bit of pet hair behind" on the rug. The rug's pile isn't stated. The stated hair load doesn't match its own dustbin weights. Its mop "often missed patches and left visible streaks", but its pet-hair guide describes a self-cleaning roller mop, the Saros 20 Flow's, so the variant behind the mopping verdict is unclear.

CNET (Louisville lab). A subjective pass on pet hair: "powerful pet hair extractor on hardwood and midpile floors". Tests run at least three times.

Just A Dad Approved (home use, review 20 May 2026, updated 24 Oct 2026). 90 days of daily runs with a shedding dog; brushes never needed cutting; no auto-empty clog reported. The first map's carpet detection drew carpets as circles that broke pad removal until carpets were drawn by hand, about 20 minutes, then reliable.

George Langabeer (two robots sent free by Roborock, Apr and May 2026). The first, a pre-production robot on beta firmware according to Roborock, ran over cables under low furniture and, in carpet-first mode, drove through spills toward rugs. The second robot fixed the cable and carpet faults but still never avoided the fake poop, and it treated spills as obstacles rather than mopping them. It was also weak on peanuts. Hair didn't tangle. He would not recommend it.

ModernDayTech (media sample, three months, Jun 2026). Reliably climbs a porch step of about 51 to 52 mm plus smaller steps; mop pads sometimes snag a homemade ramp; obstacle avoidance seemed off returning to the dock; good on pet hair; Matter works in Apple Home.

Owners. A four-cat home with a large downstairs, about a week in: happy with vacuuming and mopping, but the clean-water tank nearly empties and the battery needs a recharge on that floor. A two-cat, mostly carpeted home, four weeks: good at pulling hair out of carpet; kept trying to reach inaccessible spots until small no-go zones fixed it. A one-week cat owner: great on hard floors, misses cat hair on very short carpet despite many settings. Two owners on a three-level house begin a vacuum-only job at the dock so the pads come off, then carry the paused robot to another floor and let it finish; they report that pressing Start on the robot away from the dock runs a vacuum-and-mop job instead. One owner runs it through a third-party local server with the internet blocked (single report). Reports where the variant was unclear, including a pump failure and a robot that picked up hard poop, are left out.

Support and safety. Roborock's global policy lists RRE0CPS security support from 1 Mar 2026 to 1 Mar 2028; the same page lists Roborock app security support to 31 Dec 2026, which it doesn't explain. The US policy promises at least 2 years from sale on Roborock's site. The US warranty is 1 year for new robots, with a shorter term on certified refurbished ones bought from official stores. The FCC waiver allows, but doesn't require, updates to at least 1 Jan 2029. No CPSC recall titles name Roborock (query 26 Oct 2026). Home Assistant's native Roborock integration needs the cloud and a Roborock account; the robot isn't supported by Valetudo.

What isn't known. Nobody has published the release month, measured decibels, pet-waste results on current firmware or reliability beyond three months of ownership. It's also unknown whether a plumbed-in US version exists, which Matter version this robot runs, and whether its Matter link survives months without the internet.

Research count: 2 models weighed; 2 maker manuals among them; across this site's research, 497 sources kept in full; 148 Reddit threads read, kept as the reader's summary, not in full.