Robot vacuum leaves fine dust trails or streaks on hard floors after cleaning.

Safety first: Turn off the robot before removing the brush or bin.

• 1. Inspect main brush: Check bristles for wear or deformation. If they are flattened or missing, replace the brush.
• 2. Empty bin more frequently: Ensure the dustbin is emptied before each run, especially in dusty environments.
• 3. Clean floor sensors: Wipe any floor detection sensors that may adjust suction or brush speed.
• 4. Adjust cleaning mode: In the LG app, select a higher suction or hard-floor mode if available.