How to clean bike brake rotors effectively?

To clean bike brake rotors effectively, start by removing the wheel and brake pads. Use a clean rag and isopropyl alcohol to wipe down the rotor, removing any dirt or residue. You can also use a specific brake rotor cleaner for tougher grime. Avoid touching the rotor with your bare hands to prevent oil transfer. Reinstall the brake pads and wheel once the rotor is clean.