Narwal Freo Z Ultra

It auto-empties into a 2.5 L bag, washes and air-dries the mop, and cleans its own base, so most homes go weeks between upkeep.

The robot is 4.3 inches tall, so it fits under taller furniture but may not clear very low sofas or cabinets.

It clears obstacles up to 20 mm, so it handles standard door sills but may stop at taller thresholds.

Yes. The dock automatically dispenses detergent when washing the mop and refills the robot's water on its own.