A self-empty dock pulls debris out of the robot into a bag or a bin. The day rating is the maker’s light-use estimate. Pet hair fills it faster. WhichVac stores the published day count and scales it so 90 days is a full score. It does not turn “about seven weeks” into a lab result. Seven weeks is stored as 49 days, and the note says so.
Mop docks are a second job. Some wash pads, some dry them, some refill the tank, and some do none of that. A vacuum-only robot is not marked down for lacking a mop wash. The maintenance score says those chores do not apply.
Dreame
L40 Ultra Gen 2
Dreame combo with the highest pascal figure in the RobotReviewed self-empty set: 25,000 Pa. The dock hot-washes pads, warm-dries them, and refills water. Robot height is published at about 3.82 inches.
Value 100 · Cleaning 90 · from $569.99
iRobot
Roomba j7+
Camera-navigated Roomba with a bagged Clean Base rated for about 60 days. iRobot does not publish a pascal suction figure for it, and it does not mop. Robot height is 3.4 inches.
Value 56 · Cleaning 49 · from $799.99
Bagless bases avoid a bag subscription and, when you empty them, can put dust back in the room. That tradeoff is described on the Shark pages where a source said it. It is not a hidden penalty in the formula beyond the published interval.