Answer:
Wash them with soap and water, use a brush to help remove debris, then disinfect or sterilize them with your preferred products. Make sure you follow the directions to the letter for the disinfectant; the bits should not be left in the liquid any extra amount of time.
Nail Tool Maintenance
Clean clippers, glass files, and cuticle nippers regularly. Wipe off any debris, wash with soap and water, and disinfect by rubbing with an alcohol-soaked cotton ball.
Don't share emery boards. Because they are made of paper, they can't be properly sanitized. ...
Store tools properly.
