Church & Dwight Co., Inc. signed a definitive agreement to acquire Water Pik, Inc., a market leader in water-jet technology in both oral water flossers and replacement showerheads, for approximately $1 billion in cash. The transaction, which is subject to regulatory approval and other customary conditions, is expected to close in the third quarter.   Waterpik’s net sales for the trailing twelve months through June 30, 2017 were approximately $265 million. Approximately 70% of net sales ...