I tested a robot vacuum with an arm, and my dog may never forgive me

I suspect my dog does not like the Roborock Saros Z70. Unlike the dozens of other robot vacuums that Gus happily lets clean around him while he sleeps, the Z70 keeps stealing his treasures. Not his dog toys - although that could be a future feature - but my family's socks that he loves to collect and carry around the house with him.

Since the Z70 arrived, he's had competition. The first robot vacuum with a mechanical arm, the Z70 features a five-axis arm, branded the OmniGrip, that uses onboard sensors and a camera to see, pick up, and tidy away a small list of light items, including the aforementioned socks, footwear such as slippers and sandals, tissues, and paper. In theory, this means I should spend less time picking up after my kids or rummaging in Gus' bed to find the socks he's stolen.

In practice, it's nowhere near achieving this goal. Yes, the arm can pick up items and put them away, which is seriously impressive. It collected my son's discarded socks and a few balls of paper, putting them where I asked it to. But the Z70's limitations are deal-breakers at this point, and its lack of consistency also lets it down.

For example, while the bot would detect footwear, it …

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