3 vs Intelligent Sweeping Robot Automatic Vacuum Cleaner: A Real Comparison

The 3-in-1 Scan Drag actually attempts to wipe your hard floors with a tiny microfiber pad, while the Intelligent Sweeping Robot just pushes dirt around until its microscopic dustbin fills up.

Quick specs

Spec	3-in-1 Scan Drag Suction	Intelligent Sweeping Robot
Price	$13.46	$11.63
Cleaning style	Vacuum + dry/wet mop pad	Vacuum only
Navigation	Blind bump-and-turn	Blind bump-and-turn
Charging method	Direct USB plug-in	Direct USB plug-in
Dustbin size	Roughly a handful of dirt	Roughly half a handful

Where the 3-in-1 Scan Drag Suction wins

I run this plastic puck in my tiny guest bathroom where the cat litter box lives. Because it has that little "drag" pad attached to the bottom, it actually manages to trap the fine clay dust that the suction motor completely misses. You have to wet the pad yourself in the sink before tossing the robot into the room and shutting the door. It has no mapping capabilities whatsoever. It just bounces off the baseboards and the toilet base like a slow, confused billiard ball. But after twenty minutes of relentless ping-ponging across the linoleum, the floor is noticeably less gritty underfoot. It handles flat, enclosed hard floors better simply because the physical pad acts as a safety net for the incredibly weak vacuum motor. The "scan" part of the name is a complete fabrication—there are no sensors here besides a mechanical bumper—but the dragging action genuinely picks up the slack. I spilled a small amount of flour near the kitchen counter last Tuesday. The vacuum part choked on it immediately, but the damp pad wiped it up after three random passes.

Where the Intelligent Sweeping Robot wins

You buy this one if you have a low-pile area rug that needs surface crumbs knocked off it, and you refuse to spend more than the cost of a fast-food lunch on a cleaning appliance. The lack of a mopping pad means it doesn't get stuck on carpet edges as easily as the 3-in-1 does. I dropped it in the middle of my living room rug after eating a particularly flaky croissant on the couch. It wandered aimlessly toward the coffee table, but the spinning side brushes eventually flicked most of the visible crumbs into the suction path. It is lighter and slightly more aggressive at climbing over floor transitions. When it hits the metal strip between my hallway hardwood and the bedroom carpet, it grinds its plastic wheels for a second and then violently lurches over the hump. It works as a cheap mechanical broom for dry messes on textured surfaces where a wet pad would just cause friction and drain the battery.

The honest differences

• Mopping pad makes a mess on carpets: The 3-in-1 will drag its wet pad straight onto your rugs if you don't physically block it with a heavy object. I prefer the Intelligent Sweeping Robot for mixed-floor rooms because I don't have to build a wall of shoes to protect my living room carpet from getting damp streaks.
• Suction power is basically a myth: Neither of these machines will pull dirt out of deep crevices or thick carpet fibers. The 3-in-1 wins purely because the microfiber pad physically wipes the floor, making up for the weak motor that struggles to lift anything heavier than a dust bunny.
• Getting stuck under furniture: The Intelligent Sweeping Robot is slightly taller and wedged itself under my IKEA TV stand twice in one afternoon. I had to fish it out with a broom handle. The 3-in-1 cleared that same piece of furniture by a millimeter and kept going.
• Emptying the dustbin feels risky: Both have tiny bins that fill up in one run, but the 3-in-1's bin clicks out with a satisfying snap. The Intelligent Sweeping Robot requires prying a flimsy plastic lid on the top that feels like it will snap off every time I try to dump the dirt into the trash.
• Charging is a manual chore: Forget about docking stations. Both of these require you to hunt down the included USB cable and plug it directly into the side of the machine. The 3-in-1's charging port is exposed on the side, making it easy to plug in. The Intelligent Sweeping Robot hides its port under a weird plastic lip that requires two hands to connect.

Which one I'd buy

I would spend the extra two dollars on the 3-in-1 Scan Drag Suction. The addition of the wiping pad turns a novelty toy into a marginally useful tool for small, hard-floored rooms. I throw it in the kitchen, shut the door, and let it wipe up surface dust while I wipe down the counters. It requires babysitting, and you have to wash the little pad in the sink afterward, but it actually leaves a hard floor looking slightly cleaner than before.

Someone living in a fully carpeted apartment will absolutely hate it. The pad catches on carpet fibers, stalls the motor, and drains the battery in ten minutes flat. If your place is mostly rugs, the Intelligent Sweeping Robot is the only one that will actually move across your floor without getting stranded, even if it leaves half the embedded dirt behind. But for bare floors, the dragging pad is the only reason to buy a vacuum in this price bracket.