Reckitt Benckiser posted a 23% gain in first half sales to more than $6.5 billion at current exchange rates, thanks to its acquisition of Mead Johnson last year. That purchase provided a lift to its health business, but its home hygiene results remained, well, a bit dirty. Sales of disinfectants and other cleaners declined 3% in the first half to $3.0 billion, as category growth remained challenging due to a “continued tough pricing environment in developed markets.” The company noted that...