Polishing Metals

• EarthEasy.com recommends using a mix of lemon juice and baking soda to clean and polish brass, copper and bronze. Combine lemon juice and baking soda into a thick paste. Rub the paste onto the tarnished metal with a soft cloth. Use another cloth to wipe clean.
  
  

Kitchen Cleaner

• The properties of lemon juice make it an ideal product for removing kitchen grease and grime, according to GreenUpgrader.com. Squeeze lemon juice onto dirty appliances, allow it to set for a few minutes and wipe clean. Adding lemon juice to dish detergent helps clean greasy pots and pans.
  
  

Removing Rust

• Combine 1 cup lemon juice with ½ cup borax to create a rust stain cleaner, suggests MadeMan.com. Apply the mixture on the stained metal surface. Allow it to set for an hour before rinsing it off and wiping dry with a soft cloth.