I am not sure if you're talking about chrome for household fixtures or a car but either way all you have to do is keep them clean and/or wiped down with a rag.
By
03/20/2010
Borax, Borax Borax. I can't say it enough. I use this for prepping my car for shows, its natural eco friendly, a natural Mold killer. It is not abrasive mix with water if it is needed for fine detail. Works on the rims of my Miata to the side chrome on my 57 Chevy. I use it to clean laundry and rid the convertible of mold issues. Its cheap too and can be found in the laundry section almost everywhere.
By
03/18/2010
Squirt five or six drops of dish washing detergent into a bucket. Fill the bucket with a half-gallon of water. Swish the detergent around to make a sudsy solution.
Dip a soft cloth into the bucket, wring it out, and wash the chrome. This will remove loose dirt and grime than can scratch the metal when you polish it. Rinse the cloth as it becomes soiled. Good luck.
By
03/18/2010
One thought is to go to an auto parts store and look over their offering of car care products. They usually have chrome cleaners.