How do I care for my lock finish?

Finish Care and Cleaning of External Trim
Finishes Care Guidelines

505 (PVD Bright Brass),

605 (Bright Brass),

609 (Antique Brass),

619 (Satin Nickel),

622 (Flat Black)

Lacquered or clear-coated finishes should be wiped with a soft, damp cloth. A mild soap may be lightly used if very dirty. Particular care should be taken to avoid paint smears, thinners and strong cleaning agents as they will quickly destroy the protective coatings and subject the finish to rapid oxidation and discoloration. Initial care for finishes requires only periodic cleaning with mild non-abrasive soap and light buffing with a soft cloth.
613 (Oil Rubbed Bronze) Wipe with a little vegetable oil on a soft cloth. Too much oil may leave a residue to come off on the hands. Household detergents and mild abrasive powder may be used to restore the high metal color without seriously affecting the original compound of the metal. Then rub with a paste wax.
625 (Bright Chrome), 626 (Satin Chrome) Wipe with a soft damp cloth. A high grade chrome polish may be used according to directions to clean and restore the original shine and satin finish.