The brand predates Coca-Cola, predates the lightbulb, predates the telephone. That fact is either reassuring or alarming depending on how you read brand durability. What makes Church & Dwight unusual is the precision of its acquisition discipline. OxiClean in 2006. Waterpik in 2017. Management acknowledged the write-down without spinning it. That kind of accounting candor is rarer in CPG than it should be. Strip out the tariff benefit and the underlying numbers are still solid, but the comparison understates organic margin performance. Management took the write-down cleanly rather than restructuring around it. Those two are category-defining in ways that resist private-label substitution. Waterpik is defensible on patent grounds. The vitamin brands — as Q3 2024 demonstrated — were not. 1846. Dr. Austin Church and John Dwight begin packaging baking soda out of a kitchen in New York. The product was sodium bicarbonate — a leavening agent, a cleaning compound, a mild abrasive. There was no marketing plan. There was a functional product that households needed and two men with enough commercial sense to package it consistently. The anvil-and-arm symbol became one of the most recognized marks in American consumer products — not through advertising campaigns but through sheer ubiquity. Annual revenue stayed in the hundreds of millions. Thirteen acquisitions followed in twenty-three years, each one adding a new power brand to a portfolio built on a 179-year-old foundation. The Arm & Hammer trademark appeared in 1867, twenty-one years after the company's founding. The two family businesses — Church's and Dwight's — formally merged into Church & Dwight Co. Inc. In 1896. The brand was stable but the company was small.