How do I clean the brass plate on my front door?

Wipe off as much dry dirt from the kick plate as possible using a old rag. Squirt a little Dawn dish soap into a bucket of warm water, swirling it around with your hand or a sponge. Dip the sponge into the soapy solution and wipe down the kick plate thoroughly. Rinse the sponge and wipe down the brass again, then dry the kick plate with a soft cloth. If the kick plate has a lacquer coating, this is all the cleaning it needs, as additional cleaning materials may damage the lacquer. Lacquer looks like a clear coating over the brass. Mix several tablespoons of salt into a 1-pint spray bottle filled with white vinegar. Replace the lid and shake or stir to dissolve the salt. Spray the salty vinegar over the brass and allow it to sit for 10 minutes or so. Wipe away with a damp sponge, then towel dry the brass. Polish the kick plate by wiping it down with linseed or mineral oil applied to a soft cloth. Start with a very small amount of oil, such as a squirt or two, as a little may go a long way.

Try using ketchup!

Check it out! http://www.hometalk.com/diy/clean/house/ketchup-brass-polish-18476842?expand_all_questions=1

Wow! Thank you very much!!

Halve lemons, sprinkle salt on them and scrub away. Use a light oil after and voila!

Lemon juice and salt works wonderfully if it can stay on it for some time. It would work best if you can remove the plate from the door. If you can not then make a paste out the salt and lemon juice and try to keep on the plate. If you have heavy tarnish lightly buff it with wet dry sand paper with the paper soaked in lemon juice. Whatever you use to clean it put a clean coat of Rustoleum over it to protect it and keep it shinning.

Hello, hope this helps you out.

https://www.youtube.com/watch?v=bUnKhUzU800