Dreame L40 Ultra vs Roborock Saros Z70

Lab test of robot vacuums on pet hair (1 g of cat fur embedded in carpet). Some robots drag hair around or tangle it in the brush; the best pick up almost all of it. Top picks: Dreame L40 Ultra, Dyson 360 Vis Nav, Eufy C10, Eureka NERE10SW, iRobot Roomba Max 705, Samsung Jet Bot. Many vacuum-mop combos struggled with dried stains. Notes iRobot filed for bankruptcy the previous December and said app and support would continue.

Vacuum Wars' Dreame L40 Ultra review (page says last updated Sep 16, 2026; read Oct 27, 2026): describes an LED light on the front that lets the camera see in dark places. In its obstacle-avoidance course the L40 scored 21, tying for second overall, against an average of 17. The review doesn't describe a test in a dark room.

US Dreame L40 Ultra page (read Oct 24, 2026): $799.99. Mop lifting height 10.5 mm (0.4 in), and it lifts or removes the mops to keep carpets dry; crosses obstacles up to 0.86 in (22 mm), per Dreame's lab. 11,000 Pa suction; works with Alexa, Siri and Google Home. An anti-tangle TriCut brush is sold separately. Re-read Oct 25, 2026: the base station cleans the mop and washboard with hot water of up to 149°F (65°C), per Dreame Lab at about 73°F room temperature, and dries the mops with hot air.

CES 2025 demo of the Roborock Saros Z70: its arm picked up a balled-up sock and dropped it in a basket, but only with the sock in one specific spot. Roborock quoted a 300 g limit for socks, paper, small towels and sandals.

Review of the Saros Z70: the arm is well designed and works well when steered remotely in the app, but its automatic mode is buggy and limited. Vacuuming, mopping and navigation are outstanding; the price is described as investment-level.

Hands-on review of the Saros Z70: excellent vacuuming and mopping, but the OmniGrip arm is unreliable. A small sock and a tissue were ignored and run over; a shoe was picked up, but the claw caught inside it at the drop-off and the robot drove around with it. The arm is off by default.

US Saros Z70 page (read Oct 23, 2026): foldable five-axis arm that moves obstacles and lifts items up to 300 g (object recognition via updates; objects must be defined in the app). 22,000 Pa suction, dual anti-tangle system on main and side brush (Roborock cites a 0% hair-tangling rate in its own testing), mops that detach automatically before vacuum-only and carpet cleaning, and 108 recognizable obstacle types. Re-read Nov 3, 2026: lists crossing of double-layer thresholds up to 4 cm (2-4 cm thresholds in its checklist; results may vary with the environment), a chassis that lifts up to 10 mm and mops that lift up to 22 mm when the chassis rises. Mid-to-high-pile carpet settings must be switched on in the app.

Roborock support FAQ "Can the robot vacuum work without Wi-Fi?" (read Oct 24, 2026): its robot vacuums can do full-home and spot cleaning and return to the dock at the push of a button without Wi-Fi, and handle basic voice commands. Wi-Fi unlocks advanced features such as scheduled cleaning and suction-power selection.

Several-week hands-on review of a purchased Saros Z70 (page last updated Sep 18, 2026). The arm worked about half the time on socks, paper clumps and slides, sometimes misplaced items, and ignored objects outside its trained list.