Robot Vacuums With Dirt-Emptying Docks

Yesterday we posted about a patent app from iRobot suggesting that they might be working on a docking station that empties Roomba’s dustbin, but as commenter JP pointed out, other companies already have had this option available from several years back. There are two more or less identical robot vacuums, the Siemens Sensor Cruiser VSR 8000 and the Kärcher RC 3000, that come with a base station which can charge the robot and empty the dust bin. The bin on the dock holds about 10 full loads of d
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