The warning may refer to airflow or an obstructed detection area rather than the amount of loose dust. Emptying alone will not clear every cause.

Bed clearance is only useful if the route underneath is open. Drawer rails, fabric skirts and stored cables can interrupt access well before the robot reaches the middle.

A kitchen dock location needs dry power access, a clear approach and room for tank care. The place where the station physically fits may not be the easiest place to maintain it.

A passive pad is dragged across the floor; powered systems add deliberate movement. The upgrade is most relevant when regular damp cleaning is a real household job you want to automate.