Dreame D30 Ultra

The dock holds a 3.2 L dust bag plus 4.5 L clean and 4 L dirty water tanks, so it runs for weeks between refills and emptying. It also auto-empties the robot's 300 mL bin and refills its onboard tank mid-clean.

Yes. It clears obstacles up to 20 mm, so it crosses most door sills and transition strips between rooms without getting stuck.

The robot stands 3.8 in tall, letting it slide under many sofas, beds, and cabinets. The dock is larger at 23.2 in tall and 18 in wide, so plan floor space near an outlet.

It lifts the mop up to 10.5 mm when it detects carpet, and Smart Carpet Cleaning boosts suction there. That keeps rugs dry and lets it deep-clean carpet in the same run.

It works with Amazon Alexa, Google Assistant, and Apple. You also get no-go zones and multi-level maps for up to 4 floors, so you can block off areas and clean specific rooms.