Boston Globe 5/25/10: Sucking up weeds in Lake Cochituate. In keeping with an agreement made between the town of Natick, the state and local environmental groups, divers have begun using a suction harvester to vacuum massive tangles of Milfoil weed from the bottom of Lake Cochituate rather than using herbicides to kill the weed. The agreement was struck earlier this year between the town, the Massachusetts Department of Conservation and Recreation, Protect our Water Resources and the Friends of Lake Cochituate. Natick is contributing $12,500 to the project, while the state agency will spend $25,000, to remove milfoil from more than 5 acres.