Roborock Qrevo Edge 2

The dock holds a 2.7 L dust bag plus a 4 L clean water tank and 3.5 L dirty water tank, so it runs for weeks of normal use. You just refill clean water and empty the dirty tank occasionally.

At 3.1 inches tall, the robot slides under many couches, beds, and cabinets. The dock is larger, needing about 13.4 inches of width and floor space near an outlet.

It clears obstacles up to 20 mm, so most door sills and floor transitions are no problem. That helps it move freely across a multi-room, multi-story home.

It uses an extendable side brush and an extendable mop that reach out toward walls and corners. This helps it pull debris and mop closer to baseboards than fixed brushes.

Yes. The dock washes the pads with 176°F hot water after cleaning, then air-dries them at 131°F, which prevents damp, musty odors between runs.