All of our electric light fixtures gas light fixtures electric lanterns and copper lanterns are made of 100 natural copper and brass.
How to clean outdoor copper light fixtures. Saturate a rag or sponge with sudsy water from the second bucket and use it to wipe down the parts of the light fixture that you cannot remove. Remove small spots of tarnish on brass or copper by rubbing the cut side of a lemon on the surface. Shut off the power.
However if a fixture is inside the time to patina will be much longer. Apply patina solution made in step 3 by spraying onto fixture preferably in the early evening on a high-humidity night. If your lighting maintenance involves cleaning a copper fixture cut a lemon in half and dip the half into salt and scrub the copper lighting fixtures.
Remove tarnish from copper by squeezing a little ketchup onto a soft cloth and rubbing it over the fixture. The acid in the lemon helps loosen any tarnishes on the lighting and the grit of the salt helps scrub the tarnish away. Switch off the appropriate circuit or unscrew the correct fuse.
Rinsing the lighting fixture will remove salt build up if you cannot rinse the fixture use a damp cloth to remove excess salt build up. Clean the exterior light glass with glass cleaner and paper towels if you cannot remove the glass from the fixture. Then remove the lemon juice and salt from the copper light with a damp rag and sprinkle on some copper polish.
Only specific cleaners should be used on copper lighting fixtures due to the sensitive nature of the material. Apply the damp rag to the rusted surface and let sit for several hours occasionally rewetting the rag with vinegar. Wipe with a soft cloth wrung out in clean water.
When done use a rag a plastic scrubber or steel wool to wipe or scrub away as much loose rust as you can. These are usually easy to reach and you can clean them in place. Soak the corroded area with white vinegar.

