Ecovacs DEEBOT N30 Pro Omni

It auto-empties into a 2.6 L bag, washes the mop at 140°F, and refills the robot from a 3.5 L clean tank, so most homes go weeks between upkeep.

The robot is 4.1 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 140°F hot water and air-dries it, which helps prevent the musty odor damp pads develop.