Robot vacuum leaves a trail of dust behind the rear or around the main brush area.

Safety: Turn off the robot and remove the dust bin.

• Inspect bin and seals: Check the rubber gasket around the bin outlet and the mating surface on the robot for damage or deformation.
• Check for cracks: Look for hairline cracks in the dust bin body.
• Seat bin firmly: Reinstall the bin until it clicks and sits flush.
• If leakage continues: Replace the dust bin and, if necessary, the brush housing seal.