Roborock Qrevo Edge

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 4.1 inches tall, so it fits under taller furniture but may not clear very low sofas or cabinets.

It clears obstacles up to 40 mm, so it handles most door sills and transition strips between rooms.

It covers about 4,306 sq ft on a 240-minute charge, and recharges and resumes to finish larger homes.