Many of the super-inexpensive robot vacuums cut corners too close to the sun, quickly going from helpers around the house to agents of chaos. Let's say that their low price stems from basic bumper car navigation instead of smart mapping, or from outdated obstacle sensors that get confused by table legs. Your chances of coming home to a vacuum stuck under the couch are higher than the chance of coming home to a fully-swept floor plan.

It's also more likely than not that any old cheap robot vacuum caps suction power at 3,000 or 4,000 Pa. And that's simply not enough to challenge any remotely stubborn crumbs, dust, or pet hair baked into carpet. That mediocrity extends to many robot vacuum and mop combo models, which often don't "scrub" so much as feebly glide a damp cloth around. A few step

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