Church & Dwight is the leading producer of baking soda in the world. Around a dozen of its products are sold under the Arm & Hammer brand umbrella, such as baking soda, toothpaste, cat litter, and carpet cleaner. Its mix also includes Xtra, Trojan, OxiClean, First Response, Nair, L'il Critters/Vitafusion, and Orajel--together constituting more than 80% of its annual sales and profits. About two years ago, the firm announced the addition of Water Pik, which manufactures oral water flossers and replacement showerheads, to its mix. Church & Dwight derives about 85% of its sales from its home turf.