Church & Dwight Co., Inc. has acquired 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 closed in the third quarter. Waterpik’s net sales for the trailing 12 months through June 30, 2017 were approximately $265 million. Approximately 70% of net sales are in the water flosser segment with the remainder in showerheads. The international business represents approximately 20...