Roborock Qrevo Master

It empties into a 2.7 L bag, refills the robot's water, and cleans its own base, so most homes go weeks between hands-on upkeep.

The robot is 4.0 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.

It washes the mop with hot water rather than auto-dispensing detergent, so you add cleaning solution yourself if you want it.