How to Clean a Faucet Aerator and Sink Sprayer
Wrap some masking tape around the jaws of the groove-joint pliers or around the aerator to prevent scratches.
Protect the surface of the aerator.
Grip the outside of the aerator with the pliers, and turn the aerator clockwise to loosen it.
Be gentle; too much pressure can crush the aerator housing.
Disassemble the aerator.
Push the internal parts out of the aerator housing. A small paper clip might help. If the components are stuck, soak the aerator in white vinegar or lime-dissolver solution (one part vinegar to one part water) for 30 minutes.
Tip: Cover the sink drain to prevent small parts from accidentally falling down the drain.
Use an old toothbrush and a gentle touch to clean the parts.
Don’t bend the screens or you’ll have to replace them.
Reassemble the aerator parts.
Insert the screen, disk, and washer or O-ring (depending on your aerator’s design) in reverse order of disassembly.
Reinstall the aerator on the faucet.
Screw it in by hand in a counterclockwise direction. Use the pliers to tighten securely but there’s no need to over tighten it. Snug is good!