	chemlawn chem ecolab econ in merger pact chemlawn corp and ecolab inc said they signed a definitive merger agreement under which ecolab will buy all outstanding chemlawn common stock for dlrs a share in cash for a total of about mln dlrs under terms of the agreement chemlawn said it rescinded its previously announced rights dividend plan chemlawn previously rejected a dlr a share offer from waste management inc wmx yesterday the oak brook ill based waste disposal company said it was prepared to offer dlrs a share or about mln dlrs for chemlawn a lawn care company chemlawn had said last week that it was negotiating with other possible suitors which it did not identify a chemlawn spokesman said further details on the merger would be issued later ecolab is a maker of commercial laundry detergent based in st paul minn for its first six months ended december the company earned mln dlrs or cts a share on sales of mln dlrs officials at waste management could not be reached for immediate comment reuter 
