WASTE <WMX> ENDS OFFER FOR CHEMLAWN <CHEM> Waste Management Inc said its wholly owned subsidiary, WMX Acquisition Corp, ended its tender offer to buy shares of ChemLawn Corp at 35 dlrs a share. All shares tendered to Waste Management will be returned to shareholders as soon as practical, it said. Earlier this week, ChemLawn agreed to accept a merger proposal at 36.50 dlrs a share from Ecolab Inc in a transaction valued at about 370 mln dlrs.