Compare Roomba Combo j9+ Robot Vacuum & Mop vs Eufy S2 Omni

Included extras are solid for a flagship robot vacuum, with reviewers noting cleaning solution, fragrance modules, documentation, and extra dust bags in the box.

The S2's chassis-lift feature is repeatedly presented as a major upgrade for plush rugs, thresholds, and higher-pile carpet handling.

Design is frequently praised: the dock’s wood-look top and furniture-like footprint blend into living spaces better than many rivals. A minority dislike the faux-wood finish or find the dock less attractive in person.

Reviewers generally liked the modern, visible-tech design, translucent top, lighting, and premium styling, though the dock can be taller than some alternatives.

App and automation are feature-rich: schedules, zones, room-specific routines, dirt-prioritization, and voice assistant support are widely praised. Common nitpicks include occasional connectivity hiccups, confusing menu choices, and missing real-time map progress in some experiences.

AI navigation, 3D mapping, floor-type recognition, and app controls are useful, but the deepest independent test found app customization and smart-home integration behind rivals.

Blowback and scattering are usually controlled, with some reviewers noting it avoids flinging small particles. However, the side brush can flick larger debris around, and a few tests report scattered grains on hard floors.

Rug handling is usually good, especially because the retracting mop prevents wet pads from dragging onto carpets. Still, the mop arm can occasionally catch on rug edges/corners, and very thick or tricky rugs may need keep-out or no-mop zoning.

Area rug handling is a notable strength in several reviews, with the S2 lifting, avoiding tassels, and preventing rugs from bunching or getting pushed around.

Setup is typically quick and well-guided through the app, with packaging and quick-start materials helping. Initial mapping can take multiple runs, and a few users report early hiccups aligning the robot on the dock or connecting to Wi-Fi.

Setup is consistently described as simple, with the app and base display guiding pairing, mapping, and first cleaning with little friction.

The robot is described as responsive to obstructions, stopping or rerouting around people/pets and common objects. It’s not perfect in every edge case, but it tends to avoid creating bigger messes when something blocks its path.

Battery performance is generally strong for large-area runs, often finishing typical floors without intervention and returning to recharge as needed. Charging can feel slow for some users, but recharge-and-resume behavior is reliable in most accounts.

Battery comments are mostly positive, but measured coverage varies sharply by suction level and real-world recharge time can be long.

The bagged dock system is praised for cleanliness and low-touch disposal, typically lasting weeks to around two months depending on shedding and home size. Internal bin is small but rarely needs manual emptying thanks to frequent auto-empty cycles.

The dustbin and bag system benefits from automatic emptying and strong dock suction, reducing hands-on bin work.

Build quality is generally described as solid with removable, serviceable parts. Some mention cosmetic scuffing during early mapping runs from gentle bumping, but no widespread structural issues are reported in these reviews.

Build quality impressions are positive, with reviewers calling the construction solid and the overall package premium.

High-pile/shag carpets are a weak spot for the vacuum-only model in one review, with quick tangling/stalling in long fibers. For homes with lots of high-pile, expectations should be tempered or zones configured to avoid problem rugs.

High-pile and thick-rug handling is a split point: several reviewers praised climbing and deep cleaning, while one lab-style test found carpet agitation underwhelming versus rivals.

Low-pile carpet pickup is generally very good, handling daily hair and debris well. Some users still notice occasional leftover strands on rugs and may choose extra passes for a more thorough finish.

Low/mixed carpet pickup is usable, but independent testing found it did not clearly outperform cheaper Eufy models or the older S1 Pro in deep-clean scoring.

No summary yet.

Medium-pile carpet evidence is limited but positive, with one review citing solid medium-pile results.

Child lock exists on the station controls, though one reviewer noted it can reduce the touchscreen's practical usefulness.

Cyclonic separation and filter cleanliness are strong recurring themes, with reviewers finding suction stayed strong and filters avoided clogging.

Comparisons usually place the j9+/Combo j9+ among the best for vacuuming and obstacle avoidance, with advantages over older Roombas. Several reviewers note that top hybrid competitors can outperform it in deep scrubbing or self-maintenance features.

Comparisons are mixed: the S2 improves on some Eufy weaknesses and beats some rivals in specific tests, but other flagships remain stronger for carpet, mopping feel, or value.

Controls are straightforward: the app handles most functions, with a simple on-robot button for start/pause and basic status lights. Some reviewers wish for richer in-app live tracking and clearer guidance in the manual/owner docs.

The app and station controls are generally easy to use, with clean navigation and touchscreen controls, but advanced customization is not class-leading.

Corner cleaning is a known limitation: as a round robot with a single side brush, it can miss tight corners or smear debris in corner flour-style tests. Edges and open perimeters are better than sharp corners.

Corner cleaning benefits from an extending side brush, though independent tests suggest the robot can still leave perimeter gaps depending on the run.

Crevice and groove pickup is repeatedly called out as improved versus older Roombas, aided by stronger suction and the dual rubber rollers. It performs well on seams and along transitions in testing.

Groove and crevice evidence is positive for cracks but mixed for grout, where one test removed only part of the residue.

Cyclone performance is one of the clearest strengths: multiple reviewers praised multi-cyclone separation for maintaining airflow and keeping filters cleaner.

Dirty-water sensing evidence comes mainly from the dock's intelligent dirt detection, which can trigger additional washing or cleaning when water is dirty.

Auto-empty docking is consistently reliable, with the robot returning to empty and resume without much user intervention. Bagged disposal keeps the process clean, and many users report weeks of hands-free vacuuming before needing to swap the bag.

The dock is a major strength, handling auto-emptying, mop washing, drying, refilling, and hair-heavy debris with few clog complaints.

Dock emptying volume is inconsistent across reviewers: some describe it as very loud, while others find it comparatively quieter and less high-pitched than older Roombas. Either way, the empty cycle is brief and can be scheduled around quiet hours.

For dried-on stains, SmartScrub/back-and-forth motions improve results and can remove many common spots like dried juice, litter prints, and tracked-in dirt. Very sticky food or heavy buildup may still require manual spot work or a pad change afterward.

Dried-on stain removal is usually good for normal household stains, though heavy grout or extreme dried-mud testing is less certain.

Day-to-day use is strongly praised once maps are set: scheduling, recharge-and-resume, hands-free emptying, and reliable obstacle avoidance reduce babysitting. Early learning runs can require a bit of attention, but it becomes largely set-and-forget.

Everyday use is easy, with scheduling, automatic routines, and low-touch maintenance repeatedly mentioned as benefits.

Edge cleaning is good for a round robot but not flawless: it follows baseboards well in open areas yet can leave debris along edges and misses some grime in tight perimeter spots, especially during mopping.

Edge and baseboard mopping is mixed: some reviewers liked the extending roller, while the most critical tester found visible wall gaps.

Edge-following accuracy is one of the weaker areas, with independent testing saying it rides too far from walls and sometimes avoids edges inconsistently.

App-based maintenance reminders for filters help keep performance consistent, with clear prompts on when to replace. Filters still require planned replenishment since they aren’t washable.

Dust containment is generally solid, helped by a sealed, bagged dock and replaceable filters. Filters are not washable and need periodic replacement, but most reviewers report clean handling with minimal dust mess.

Dust containment and filtration are strong, with filters repeatedly staying clean after weeks of use and cyclonic separation keeping fine dust away from airflow.

The floorhead design stands out for its wide roller mop, extending mop head, and dual-brush anti-tangle layout.

Hard floors can look clean and shiny after mopping, though this evidence comes from one strong hands-on review.

Fresh wet-mess pickup evidence is positive in tomato sauce testing, where the robot picked up the mess without smearing.

Hair-removal channel behavior is positive overall: reviewers reported no tangles and center-channel hair removal working as intended.

Carpet hair pickup is strong in many reports, though a few users still see stray hairs on low-pile rugs and may prefer an extra pass for perfection. Overall it’s above average for daily maintenance.

Hair pickup on carpets is strong when the priority is hair management, even if carpet agitation is not always class-leading.

Hard-floor hair pickup is a consistent strength, especially for pets and long human hair. A few mention the occasional hair clump, but overall results are strong with minimal leftover hairballs.

Hard-floor hair pickup appears strong, with reviewers finding minimal buildup on the roller after cleaning.

Dual rubber rollers reduce tangling compared with bristle rollers, and several reviewers report noticeably less hair wrap. Some periodic hair removal is still needed, especially in heavy-shedding homes.

Hair-wrap resistance is one of the strongest consensus wins, especially for long-hair and pet households.

Fine dust pickup on hard floors is consistently reported as excellent, including flour/sand-style tests in some reviews. Multiple passes can further improve results, especially on carpet fine-particle stress tests.

Fine dust pickup on hard floors is strong, including cocoa powder and fine-particle references, with no visible residue in several tests.

Large debris pickup is strong overall, though a few note the side brush can flick bigger bits around before they’re captured. In most homes it handles cereal, kibble, and tracked-in debris well, with occasional stragglers in corners.

Large debris intake is strong on hard floors and mixed surfaces, with reviewers citing immediate pickup and good handling of cereal-like debris.

Lighting evidence is limited but positive, with one reviewer noting a light for dark areas and tight spaces.

The station's heating functions are strong, with hot-water mop washing and hot-air drying repeatedly called out.

The combo design is seen as meaningfully innovative: the fully retracting mop arm reduces carpet-wetting risk, and the auto-fill dock adds true hands-free mopping convenience. It’s less novel on pad washing, where competitors often do more.

Reviewers treated the S2 as innovative thanks to the fragrance system, cyclonic airflow, roller mop, and award/first-look attention.

Kid-friendliness is supported mainly by chemical-free sanitizing and cleaner floors for children or pets, not by child-specific controls beyond lockout.

Large debris handling is generally strong, with cereal, candy, and heavier debris picked up well in multiple tests.

The low-profile body helps it fit under more furniture than bulkier rivals, improving coverage in real homes. Dock size is still substantial, but the robot’s height is generally a plus.

Low-profile performance is positive for the robot body, which can fit under beds or tighter furniture better than some taller models.

Maintenance is moderate: the bagged dock reduces daily hassle, but mop pads still require manual washing/swapping and parts like filters/brushes need periodic attention. Several reviewers call the pad-care step the main ongoing chore.

Maintenance needs are low overall thanks to the dock, cyclonic filter, and anti-tangle brush, though roller-tray buildup and tank rinsing still matter.

Maneuverability is generally smooth, with one reviewer praising movement quality and another noting mapping/path quirks around obstacles.

Mapping and pathing are generally systematic and thorough, with efficient row cleaning once the home is learned. Initial mapping is sometimes slow or clumsy compared to LiDAR bots, and a few tests note slightly longer overall run times than some competitors.

Mapping is fast and detailed, but path efficiency is not perfect in obstacle-heavy testing.

The retracting mop mechanism is a defining strength, reliably keeping carpets dry by fully lifting/stowing the pad on top of the robot. It enables true vacuum-and-mop-in-one-run behavior without worrying about damp rugs.

The mop-lift system is a major strength, with 28 mm lift and carpet avoidance repeatedly mentioned, though one review wished for a mop cover.

Mopping is generally effective for routine upkeep, with smart back-and-forth scrubbing helping on stains. It can struggle with sticky messes and heavy grime compared with spinning/vibrating pad competitors, and edges/corners remain challenging.

Mopping is one of the best-supported strengths, especially on hard floors, visible stains, and everyday LVP/tile cleaning.

Noise is a mixed bag: in-room vacuuming is often described as noticeable but tolerable, while auto-emptying can be loud for some. A few reviewers found the empty cycle quieter than other robots, but others measured/mentioned it as disruptive.

Noise is a drawback: reviewers measured or noticed above-average sound, especially on maximum suction.

Obstacle avoidance is a defining strength: the camera-based system reliably dodges cords, toys, shoes, and pet waste in most tests, and often outperforms rival bots in clutter. It’s not flawless, but it dramatically reduces stuck events and accidental messes versus non-vision robots.

Obstacle avoidance is useful but not flawless; some reviewers saw excellent avoidance, while independent testing found everyday clutter still gets pushed.

Odor control is polarizing: the dock sanitation and fragrance can help, but some reviewers found the scent too weak to matter.

Ongoing costs are a real factor: bags, filters, brushes, and occasional pads add recurring spend. The upside is the bagged system is clean and parts are widely available, but budget-minded buyers should plan for replenishment.

Overall cleaning convenience is high because the dock, mapping, self-cleaning mop, and scheduled operation reduce hands-on work.

Longevity evidence is positive, centered on sustained suction, clean filters, and claims/tests showing no quick performance drop.

Overall opinion is favorable but nuanced: most reviewers praised the S2, while the strongest independent review framed it as specialized rather than universal.

Packaging evidence is brief but positive, with one reviewer saying everything was well packed.

Pet households benefit from strong poop/pet-waste avoidance, plus reliable hair pickup on hard floors and rugs. Multiple reviews highlight the pet waste guarantee as a key confidence booster in cluttered homes.

Pet-readiness is supported indirectly through hair management, pet waste avoidance, pet hair pickup, and odor/sanitation features.

Value is polarizing: most agree performance and automation are premium, but the MSRP feels steep and many recommend waiting for sales. Those upgrading from older Roombas or prioritizing obstacle avoidance are more likely to feel it’s worth the spend.

Price and value are the clearest caveats: several reviews noted the high $1,599.99-class price and questioned value versus cheaper or competing models.

Privacy controls are a recurring discussion point because the robot uses a camera for navigation and obstacle recognition. Reviews note opt-in options and iRobot’s stated controls/encryption, but some users may still prefer a non-camera approach depending on comfort.

Privacy evidence is limited but positive for buyers who dislike camera-style monitoring, since one reviewer noted there is no video monitoring mode.

Runtime is generally strong for a premium robot, commonly around two hours in everyday use, with recharge-and-resume covering larger spaces. Expect longer total job times when both vacuuming and mopping, or when using max power/two-pass settings.

Runtime is adequate but context-dependent; coverage can be large on low suction and much lower on max suction.

Sanitizing performance is widely emphasized, especially electrolyzed or ozonated water and claimed 99% to 99.99% bacteria/pathogen reduction.

Self-cleaning is a core strength: the roller cleans in real time and the dock washes, dries, and prepares the mop after runs.

Software support evidence is positive but early, with one pre-production reviewer seeing frequent firmware fixes.

The liquid system is advanced, with auto detergent, clean/dirty water handling, and electrolyzed water.

Storage footprint is mixed: the station is narrow or compact to some reviewers, but taller and more wall-space-hungry to another.

Residue and streaking are usually minor, but some reviewers notice occasional streaks or sticky patches after messy tests like jam/jelly. Regular pad washing and appropriate water/solution settings help reduce visible streaking.

Streaking and residue performance is strong in most hard-floor tests, with reviewers repeatedly reporting no visible streaks, residue, or smearing.

Stuck events are infrequent once maps and keep-out zones are tuned, but the robot can still snag on bath mats, high-pile rugs, tight gaps, or situations where the mop arm can’t retract cleanly. Overall, it improves after the first few runs.

Stuck resistance is positive on thresholds, rugs, and obstacles, though not every obstacle-avoidance test was flawless.

Across reviews, suction is a standout: strong pickup on hard floors and carpet, with smart boost behavior and fewer repeat passes than older Roombas. A few testers still rate raw power a step behind the most aggressive premium competitors, but most call it top-tier for daily debris.

Suction and airflow are major strengths, with 30,000 Pa, 100 air watts, and sustained airflow repeatedly highlighted.

Heavy-duty suitability is good but not absolute; it can tackle demanding rugs and heavy use, but sustained max boost and deep shag can still be caveats.

Reliability feedback is mostly positive over weeks of use, but a few reviews mention glitches (unfinished jobs, mode misbehavior) and at least one report of a defective unit that required replacement. Keeping receipts for early runs is commonly advised.

Support and reliability are mixed: firmware updates were active, but a preorder recall and short warranty caveat reduce confidence.

Under-furniture reach is good thanks to the low profile and persistent navigation, with multiple reviewers noting it cleans under beds, desks, and tables. Very low clearances still depend on your furniture height.

Under-furniture pickup is positive, with reviewers saying it fits under most furniture and cleaned under beds that prior robots missed.

Value-for-money is mixed: the S2 is premium and capable, but reviewers questioned whether it justifies its price over Eufy's cheaper models or other flagships.

Versatility is strong across vacuuming, mopping, carpet adaptation, hard floors, thresholds, schedules, and multi-room cleaning.

Auto-fill dock is a major convenience, with many citing weeks of mopping before refills in average use. A few find the reservoir awkward to handle/refill, but the concept and day-to-day automation score highly.

Water tank usability is mostly good, with clear clean-water visibility and large reservoirs, though dirty tanks can develop odor without rinsing.