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Arm & Hammer was founded over 150 years ago by Dr. Austin Church and John Dwight, formed a business to produce and distribute Baking Soda. The Arm & Hammer trademark symbolizes the strength of Baking Soda. It shows the arm of Vulcan, Roman God of Fire, bringing down his hammer on an anvil. The baking soda used in Arm & Hammer is derived from a natural occurring mineral called trona, and has unique capabilities including gentle cleaning, effective deodorizing and of course, as a leavening agent in baking.