But Zacks Equity Research said Dec. 21 that it's concerned about currency fluctuations and "aggressive competition" from rivals Clorox ( CLX ) and Church & Dwight ( CHD ). Ecolab said Wednesday it completed its buyout of Mexico-based Quimiproductos, a top maker of cleaning, sanitizing and water treatment products. "Sluggish European markets and raw material price inflation also remain head winds," said Zacks, which has a neutral rating on Ecolab's shares.