CLR — a calcium, lime and rust remover — can dissolve most rust from metal surfaces. After cleaning, keep the metal clean and dry, or apply a rust protector to prevent rust in the future.

Does CLR really remove rust?

CLR — a calcium, lime and rust remover — can dissolve most rust from metal surfaces. After cleaning, keep the metal clean and dry, or apply a rust protector to prevent rust in the future.

What happens if you leave CLR on too long?

Don’t leave CLR for longer than two minutes. Again, CLR is acidic, which makes it effective, but also means it can cause damage if left in contact with surfaces for too long. Always rinse away with cool water after two minutes of contact.