Ecolab Inc. (Ecolab) develops and markets products and services for the hospitality, foodservice, healthcare and industrial markets. The Company provides cleaning and sanitizing products and programs, as well as pest elimination, equipment maintenance and repair services primarily to customers in the foodservice, food and beverage processing, government, retail, textile care, commercial facilities management and vehicle wash sectors. The Company business segments include United States Cleaning & Sanitizing segment, United States Other Services segment, International segment, Water Services segment, Paper Services segment and Energy Services segment. In March 2011, it purchased the assets of O.R. Solutions, Inc. In December 2011, it merged with Nalco Holding Company. In December 2011, it acquired Esoform. In December 2011, the Company acquired the InsetCenter pest elimination business in Brazil. In March 2012, it acquired Econ Industria e Comercio de Produtos de Higiene e Limpeza Ltda.